A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Need help with 15 8th grade questions. Will medal and fan!

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ill do my best to help you out :D

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    What is the solution to the equation?

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -18+4+x=9-19 x=

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so keep x on one side and move all the the other number to the other... you should end up with x=9-19+18-4, add them all up and there you have it :D

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So, 4?

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Emeyluv99

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4x-26-3x=16-20 x=

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thats right

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now for this second one, keep all the x's on one side and move everything else to the other

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4-26-3=16-20? @emeyluv99

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hang on, where are your x's you should be getting 4x-3x= 16-20+26

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I don't know. I'm confused :x I don't understand this.

  13. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so you want to figure out the value of x. Yes?

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Correctumundo.

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so you have two numbers that are multiples of x, but, because you dont know what x is, you dont know what 4x or 3x is.

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes.

  17. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so now, what we can do is put all the numbers that we know the value of (ie all the number that are not multiples of x) on one side, and keep the multiples of x on the other

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    this just helps us see what we do and dont know and makes it easier to solve.

  19. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    go ahead and try it.

  20. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So, 4x-3x= 16-20+26

  21. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Emeyluv99

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good.

  23. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I just copied what you put earlier....xd

  24. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so now, what do you think 4x-3x is

  25. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (ahah cheeky)

  26. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I don't know!~ I am SO confused. No matter how it gets explained I don't understand.

  27. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok lets try some experimenting then shall we?

  28. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    We shall.

  29. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so lets pretend that x=5.

  30. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    whats 3*5-4*5

  31. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    5

  32. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    NO!

  33. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -5

  34. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, youre correct

  35. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    its - 5

  36. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    15-20= -5

  37. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now try with x=20. whats 4*20-3*20

  38. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    20

  39. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good

  40. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    how about when x=30? whats 4*30-3*30?

  41. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    120-90=30

  42. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I get this part.

  43. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ae you seeing a pattern here?

  44. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes.

  45. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so theres this rule in algebra. It goes somehting like this: ax+bx =(a+b)x

  46. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    here a can be any number and b can be any number. id either of them are negative, that meass youre subtracting.

  47. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    in your case, a is 4 and b is -3. see if you can work out what 4x-3x is with this rule

  48. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1442034277690:dw|

  49. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    pardon! IF either of them are negative that MEANS you're subtracting

  50. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So, 16-9?

  51. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    not quite. Using the rule you should get that 4x-3x= (4-3)x. which is just x.

  52. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ..where is a and b?

  53. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    like x a and b are variables.. so depending on the problem a and b can be any number

  54. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so in this problem, a= 4 and b=-3.

  55. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So, a and b in this problem was 4 and -3. So, it would actually be, 4x-3x= (4-3)x

  56. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    exactly!

  57. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Just copied what you said earlier :x

  58. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    haha, but do try to understand it.. it helps a LOT when you get into harder algebra.

  59. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    How would it equal (4-3)x?

  60. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I GET IT!

  61. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    We moved the x to one side leaving only 4-3!1!

  62. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    YES! so now that means (4-3)x = x

  63. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So 1= x?

  64. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    NO

  65. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thats getting a little far ahead. Bring back the equation we made earlier.

  66. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (4-3)x = x

  67. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4x-3x= 16-20+26

  68. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so what you have done is solved the left side of the equation. But, you cant ignore the right side!

  69. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    We know that 4x-3x=x right?

  70. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes.

  71. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so what we do now, because x and 4x-3x have the SAME VALUE, we can say x= 16-20+26

  72. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So, x=22?

  73. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    exactly!

  74. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I'm going to try ONE on my own. Stay here though, so you can tell me if I'm wrong.

  75. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sure thing!

  76. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The one I'm trying is -4x=5(x-2)=-16+10

  77. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    go for it

  78. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Would the beginning be -4+5(-2)=-16+10xx?

  79. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hm.. not quite.

  80. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the thing is you have two equations here. take one at a time. start with -4x= 5(x-2) and then move on to 5(x-2) = -16+10

  81. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OK.

  82. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    :( Confused now. T_T I REALLY want to get this! I just can't understand.

  83. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and also, remember the rule i showed you before? you'll have to use that here, but in reverse. Youll be doing (a+b)x= ax+bx

  84. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the hardest part in this is unravelling 5(x-2)

  85. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (-4+5)x=-4x+5x?

  86. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Emeyluv99

  87. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    exactly like that, but do that with the numbers you have in this equation. remember that a and b change depending on what your equation is.

  88. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Aren't a and b --5 and 5?

  89. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so if the rule is x(a+b), here, your x=5, a=x and b=-2. But this does not mean that your answer is x! because you ahve a whole other equation to solve!

  90. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (x+-2)5=-2*5+x*5

  91. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ??

  92. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    excellent!

  93. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so lets bring back the first of our two equation. -4x= 5(x-2)

  94. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you know what the 5(x-2) is now. so go ahead and replace that with what we found out with the rule

  95. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Wait what? Replace what?

  96. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so we found out that 5(x-2) = -2*5 + x*5 right?

  97. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes.

  98. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so, we know that both 5(x-2) and -2*5 +x*5 have the SAME VALUE

  99. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so whats stopping us from writing -4x= 5(x-2) as -4x= -2*5+x*5 ?

  100. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    T_T I understand when you write it, but not how you got it! :(

  101. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    lets make an analogy ok?

  102. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes ma'am.

  103. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh please dont ma'am me, im only 15 ahah

  104. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I know, but you're my teacher (senpai), so you are ma'am.

  105. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hahah very well then!

  106. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    but lets say we have we have a banana and two apples

  107. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes ma'am!

  108. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    lets name this banana -4x

  109. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    *laughs* OK...

  110. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now one of our apples is called 5(x-2) and we find out that the other one (called -2*5+x*5) has the exact same weight!

  111. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes ma'am! (making a sandwich, but keep explaining.)

  112. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Back.

  113. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so we put apple 5(x-2) and banana -4x on a set of scales and we see that they have the same weight

  114. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now because we know that apple 5(x-2) and apple -2*5+x*5 have the same weight, we replace apple 5(x-2) with apple -2*5+x*5

  115. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and what do you think we find between this new apple and the banana?

  116. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    There's a weight difference?

  117. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ah remember that both apples have the same weight! so technically, switching them around makes no difference

  118. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OH! I get it!(nope)

  119. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    say we take two different bags of flower same weight same everything

  120. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and we compare it to a brick of equal weight.

  121. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So everything is the same?

  122. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes so if everything is the same,

  123. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the weight difference between bag 1 and the brick is 0, and the weight difference between bag 2 and the brick is?

  124. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    0

  125. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    exaclty so if both bags are the same, does it matter which one we compare it to?

  126. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Not at all ma'am.

  127. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    similarly, 5(x-2) and -2*5+x*5 are have exactly the same "weight" (mathematically its value, but we'll say weight until you get the hang of it)

  128. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so does it matter which one we compare to -4x?

  129. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No ma'am.

  130. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so we choose to compare it to -2*5+x*5 because its easier to work with

  131. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    which is why we had gotten -4x= -2*5+x*5

  132. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    What is 'it' Ms. Luv?

  133. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    'it" is -4x

  134. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OH!

  135. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im sensing a eureka moment!

  136. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so now we can take care of one of the two equations we made! -4x= -2*5+x*5 so get all the x's to one side and all the non x's to the other just like we did before

  137. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Eureka!! I still don't understand! (keep explaining)

  138. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    remember it doesnt matter which one (5(x-2) or -2*5+x*5) we compare -4x to, we choose the second option because its easier for us to solve

  139. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ugghh! MY BRAIN IS BUILT FOR ENGLISH, NOT MATH!!!

  140. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ahahah mines the otherway around. keep trying

  141. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i have to run to lunch give me 20 minutes please. keep trying ill be back soon!

  142. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Will do!

  143. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So, -30?@Mimi_x3 @j2lie

  144. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Mimi_x3

  145. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    whats your question btw?

  146. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -4x=5(x-2)=-16+10

  147. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x=?

  148. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1442038760084:dw|

  149. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 32

  150. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Emeyluv99

  151. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1442038811837:dw|

  152. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no |dw:1442038932820:dw|

  153. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1442038977386:dw|

  154. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ShirouxGhoul do you understand

  155. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No...not yet. Help with a few more?

  156. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    say

  157. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No...not yet. Help with a few more?

  158. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  159. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -6.8+2.6+x=9.7 x=?

  160. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hey i'm back... if you still need help :D

  161. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I wish @Emeyluv99 was back! I ..EMEY!!!!!!

  162. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1442039191373:dw|

  163. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hello! your wish is granted ahah

  164. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so where are we now?

  165. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Emey, I don't do good with word problems, so please use a standard problem.

  166. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -6.8+2.6+x=9.7

  167. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    got it.

  168. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1442039271587:dw|

  169. madhu.mukherjee.946
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay bye then @Emeyluv99 will help you from now on

  170. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    this is exactly like that first problem we did. move everything without x to one side and add em all up !

  171. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OK! Thank you so mcuh @madhu.mukherjee.946!! Tell me if you need help!

  172. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Hmm, we're polar opposites....

  173. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    alrighty then @ShirouxGhoul, where are we

  174. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    we do seem to be dont we.. ahah

  175. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -6.8+2.6+x=9.7

  176. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ah yes. so lets get everything that doesnt have x on one side, like we did before.

  177. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    that would give us x=9.7+6.8-2.6

  178. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -4.2

  179. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    13.9

  180. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yup

  181. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x=13.9?!

  182. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the trick to any algebra problem like the one's were doing right now is to always try and get x (or any other variable) alone on one side.

  183. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x=13.9?!

  184. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it is

  185. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The problem is done...?

  186. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yup

  187. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    *mindblow*

  188. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hahaha see, x is antisocial and wants all the number to leave his side and go to the other side.

  189. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    OMEGERD! It's SO complicated now!!

  190. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    whats the next one? we'll get through this, hang in there!

  191. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1/3x+ 1/3 (2x-15) =3 1/2

  192. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    x= blank blank over blank

  193. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ah fractions!

  194. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Mixed number I believe.

  195. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    first tip to understand agebra with fractions, what does it mean when something is a fraction?

  196. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It's a part?

  197. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Of a whole?

  198. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes so what are you doing to the whole to find that part. Adding? multiplying? Dividing or subracting?

  199. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Dividing, I believe.

  200. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    correct.

  201. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    are you familiar with the order of operations?

  202. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes!

  203. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Pemdas?

  204. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    excellent! its going to make your life SO much easier here

  205. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I hope so!

  206. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh hang on a second. this is different

  207. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    scratch that sorry i read that wrong.

  208. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok new board.

  209. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so when you have fractions in algebra, you reallly want to get rid of the denominators. How do you think you do that?

  210. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    To get rid of the fractions, we pick a useful number and multiply both sides of the equation by that number. The number is useful if multiplying eliminates all fractions?

  211. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good!

  212. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Don't you just LOVE Google? ;x

  213. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i really do!

  214. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    This is quite a long thread you have going :o

  215. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so when we have this in algebra, what we do is multiply EVERYTHING in the equation by BOTH denominators.

  216. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Well, since I Googled it, I get it now. (The denominator thing, not this thing)

  217. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so it will look somehthing like this.

  218. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Jhannybean It's because I'm stupid, and it's impossible to explain things to me. :~

  219. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I mean... if that's what you want to believe....

  220. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ShirouxGhoul You're not stupid! Dont say that! You'e brains just hardwired for English!

  221. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    besides, you'll get the hang of algebra in time!

  222. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    .....

  223. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Any other questions @ShirouxGhoul ? I can also give it a try! :)

  224. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    $$\frac{1}{3x}+ \frac{1}{3 (2x-15)} =3 \frac{1}{2}$$ $$ (3(2x-15))(3x) \frac{1}{3x} + (3(2x-15))(3x) \frac{1}{3(2x-15)} = (3(2x-15))(3x) \frac{7}{2} $$

  225. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the second is what you get when you multiply the whole equation by both denominators on the right side!

  226. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    whoah, thats too many steps all muddled into one.

  227. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    true, let me break it down.

  228. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    first and foremost, simplify everything. all fractions.

  229. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    write 3 1/2 as an improper fraction first, it makes it easier to visualise everything

  230. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\sf 3\frac{1}{2} \implies \frac{(3\cdot 2)+1}{2} =~? \]

  231. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    after you figure that out, choose one denominator, to get rid of. one at a time, we can get rid of all of them.

  232. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Internet went out for a min. Sorry!

  233. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no problem! so make the improper fraction and choose a denominator to eliminate first! we'll continue from there!

  234. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That's true, @Emeyluv99 , or you can look at \(\sf 3x\) , \(\sf 3(2x-15)\) and \(\sf 2\) and multiply both the numerator and denominator of each fraction with the multiplication between all 3 of these.

  235. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    WHOA! Slow down! I am SO confused! You have to remember, i don't understand this all too well.

  236. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, lets take this one by one.

  237. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    *I

  238. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok, ok, sorry!! I was referencing @Emeyluv99 :)

  239. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so @ShirouxGhoul already told me that the way to get rid of a denominator is to multiply the fraction.

  240. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thats correct

  241. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so lets start one at a time. Well do 3x first

  242. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    because we're dealing with an equation, we have to multiply EVERYTHING with 3x, not just that fraction. so that'll give us $$(3x) \frac{1}{3x}+(3x) \frac{1}{3(2x−15)}=(3x) \frac{7}{2}$$

  243. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    in our first fraction, 3x cancels out with 3x, so it just becomes 1

  244. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Jhannybean It's OK, I was just saying I was lost is all. :)

  245. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    did you get that last bit?

  246. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes. So now we're left with 1 in place of x?

  247. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    we're left with 1 in place of \[\frac{1}{3x}\]

  248. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    $$1+(3x) \frac{1}{3(2x−15)}=(3x) \frac{7}{2}$$

  249. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    do you see what i mean?

  250. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think so.

  251. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Emeyluv99???

  252. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes im here, the internet 's being mean sorry

  253. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3(2x-15). We'll multiply everything in the equation by this to get: $$(3(2x-15)) 1 + (3(2x-15)) (3x) \frac{1}{3(2x-15)} = (3(2x-15)) (3x) \frac{7}{2}$$

  254. Jhannybean
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Found the reason for the lag, 1. thread is WAY too long 2. it's taking a lot of time to load the latex. TRy opening a new question after you guys are done. Makes things easier.

  255. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Jhannybean that makes a lt of sense.. thanks so much!

  256. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.