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erinhass

  • 2 years ago

I need help solvin the equation x/7-8=-10

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  1. godorovg
    • 2 years ago
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    okay I am ready and reporting to you help..

  2. tiffanymak1996
    • 2 years ago
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    x/7 =-10+8

  3. tiffanymak1996
    • 2 years ago
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    x/7 = -2 x=7 times -2 x=-14

  4. godorovg
    • 2 years ago
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    we are solving for x right?

  5. erinhass
    • 2 years ago
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    yes

  6. tiffanymak1996
    • 2 years ago
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    check your answer: x=-14 x/7 -8 = (-14)/7 -8 =-2-8 =-10

  7. godorovg
    • 2 years ago
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    no no you can't do that when x/7 no

  8. tiffanymak1996
    • 2 years ago
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    why?

  9. godorovg
    • 2 years ago
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    whenever you see / it means divide

  10. godorovg
    • 2 years ago
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    so therefore we x divided by 7

  11. tiffanymak1996
    • 2 years ago
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    yeah, i know, when you change sides, it becomes mutiplying

  12. godorovg
    • 2 years ago
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    correct

  13. erinhass
    • 2 years ago
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    ???

  14. tiffanymak1996
    • 2 years ago
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    but you have to change sides with addition (or subtraction first before you can change sides with division)

  15. erinhass
    • 2 years ago
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    so it should be 7x=-14

  16. erinhass
    • 2 years ago
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    then divide by 7?

  17. godorovg
    • 2 years ago
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    no it's divided here so that can not happen

  18. godorovg
    • 2 years ago
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    anytime you have something divided by something you times it

  19. godorovg
    • 2 years ago
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    in order for the x or whatever you are solving for.

  20. erinhass
    • 2 years ago
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    ok, let's do this one for clarity.......1-n/5=12

  21. erinhass
    • 2 years ago
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    subtract -1 from both sides...

  22. erinhass
    • 2 years ago
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    you have n/5=11

  23. erinhass
    • 2 years ago
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    so the answer is 55?

  24. tiffanymak1996
    • 2 years ago
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    negative sign!

  25. tiffanymak1996
    • 2 years ago
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    you should have -n/5 =11

  26. erinhass
    • 2 years ago
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    -11?

  27. erinhass
    • 2 years ago
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    oh, I see!!!

  28. godorovg
    • 2 years ago
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    guys if you are doing this right than have X=??

  29. erinhass
    • 2 years ago
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    -55

  30. tiffanymak1996
    • 2 years ago
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    1- n/5 =12 1 -1 -n/5 =12-1 -n/5 =11 -n=55 n=-55

  31. erinhass
    • 2 years ago
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    yipee!

  32. tiffanymak1996
    • 2 years ago
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    gr8! just make sure you don't get confused with the signs

  33. godorovg
    • 2 years ago
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    oh I see what you are doing now, I go step by step that is why I was thrown off by what you did

  34. tiffanymak1996
    • 2 years ago
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    sry!

  35. erinhass
    • 2 years ago
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    6t +3=-7

  36. erinhass
    • 2 years ago
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    subtract 3 from both sides

  37. tiffanymak1996
    • 2 years ago
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    and you can always check your answers by substituting x=? in you equation

  38. erinhass
    • 2 years ago
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    6t=-10

  39. erinhass
    • 2 years ago
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    divide by 6?

  40. tiffanymak1996
    • 2 years ago
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    yes

  41. erinhass
    • 2 years ago
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    answer is -2?

  42. tiffanymak1996
    • 2 years ago
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    what is -10 divided by 6?

  43. erinhass
    • 2 years ago
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    something isn't right, that is not one of my answwer choices

  44. godorovg
    • 2 years ago
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    10 goes into 2 five and 2 goes into 6 3 so the answer is -5/3

  45. tiffanymak1996
    • 2 years ago
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    well your steps are all correct...

  46. erinhass
    • 2 years ago
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    I didn't have the lowest denominator

  47. tiffanymak1996
    • 2 years ago
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    usually the answers are in simplest form, so simplify your fractions

  48. tiffanymak1996
    • 2 years ago
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    what choices do you have?

  49. godorovg
    • 2 years ago
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    Tiffany I am so sorry about this, I was trying to walk through the steps here so you could ask questions. if you have this I will go

  50. erinhass
    • 2 years ago
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    I have -5/3 as an answer

  51. godorovg
    • 2 years ago
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    no before you said -2

  52. erinhass
    • 2 years ago
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    right, but godorovg came up with -5/3 and I have that as an answer choice

  53. erinhass
    • 2 years ago
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    I did not simplify

  54. godorovg
    • 2 years ago
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    unless it says to do it I would leave as is

  55. erinhass
    • 2 years ago
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    15=-15-8u

  56. erinhass
    • 2 years ago
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    add 15 to both sides

  57. erinhass
    • 2 years ago
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    30-8u

  58. erinhass
    • 2 years ago
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    30=-8u

  59. erinhass
    • 2 years ago
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    then what?

  60. erinhass
    • 2 years ago
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    divide by -8?

  61. tiffanymak1996
    • 2 years ago
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    yes

  62. erinhass
    • 2 years ago
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    15/-4?

  63. erinhass
    • 2 years ago
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    -15/4?

  64. tiffanymak1996
    • 2 years ago
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    yes

  65. erinhass
    • 2 years ago
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    I need help with this one 0=1/6y+8=

  66. erinhass
    • 2 years ago
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    subtract 8 from both sides

  67. tiffanymak1996
    • 2 years ago
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    yes

  68. erinhass
    • 2 years ago
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    0-8 is 0?

  69. erinhass
    • 2 years ago
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    -8?

  70. tiffanymak1996
    • 2 years ago
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    yes, -8

  71. erinhass
    • 2 years ago
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    -8=1/6y

  72. erinhass
    • 2 years ago
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    now what?

  73. godorovg
    • 2 years ago
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    can I help here, this problem you are making it harder than it has be

  74. tiffanymak1996
    • 2 years ago
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    because the variable is in the denominator, therefore we have to switch it to the other side

  75. tiffanymak1996
    • 2 years ago
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    -8=1/6y -8(6y)=1/6y times 6y

  76. tiffanymak1996
    • 2 years ago
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    so you multiply both sides with 6y

  77. godorovg
    • 2 years ago
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    yes that is right, although when you first start this collect all a like terms and move then to one side and than times through the number being divided

  78. erinhass
    • 2 years ago
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    show me

  79. godorovg
    • 2 years ago
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    okay let us take this one x/7-8=-10 now here is how I would do this First take the -8 and add 8 to the -10 so now we have this x/7=-10+8 than take this and do the sub to get -2 so now we have x/7=-2 once you have than take the seven ant times to the two so now we have X= -14 like that

  80. erinhass
    • 2 years ago
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    ok

  81. erinhass
    • 2 years ago
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    -8=1/6y?

  82. godorovg
    • 2 years ago
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    okay now you tell me

  83. erinhass
    • 2 years ago
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    multiply both sides by 1/6?

  84. tiffanymak1996
    • 2 years ago
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    you multiply both sides with 6y

  85. godorovg
    • 2 years ago
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    yes

  86. godorovg
    • 2 years ago
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    but it is 1/6 not just six

  87. erinhass
    • 2 years ago
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    so y=1/6x8?

  88. godorovg
    • 2 years ago
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    yes

  89. erinhass
    • 2 years ago
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    or 48?

  90. tiffanymak1996
    • 2 years ago
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    it should be y=1/-48

  91. erinhass
    • 2 years ago
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    oh yes, because it was a -8

  92. tiffanymak1996
    • 2 years ago
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    since: 1/6y =-8 1/(6 times-8) =y so, y=1/-48

  93. godorovg
    • 2 years ago
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    yes it that is the y=1/-48

  94. erinhass
    • 2 years ago
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    okay, thanks guys! I'm tired...going to bed, goodnight! Thanks for your help!

  95. godorovg
    • 2 years ago
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    hey no problem glad I could you help you :)

  96. tiffanymak1996
    • 2 years ago
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    gd nite!

  97. godorovg
    • 2 years ago
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    tiffany great job!!

  98. tiffanymak1996
    • 2 years ago
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    u too!

  99. tiffanymak1996
    • 2 years ago
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    it's funny that when erinhass says good night , it's actually good morning for me. :)

  100. godorovg
    • 2 years ago
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    yeah and it's night time where I am as well

  101. tiffanymak1996
    • 2 years ago
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    u live in the states?

  102. godorovg
    • 2 years ago
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    yes Portland Ore

  103. tiffanymak1996
    • 2 years ago
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    oh, good for u, i've always wanted to live in the states

  104. godorovg
    • 2 years ago
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    yeah funny thing I have always wanted to leave the States

  105. tiffanymak1996
    • 2 years ago
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    guess we would all like to explore more.

  106. godorovg
    • 2 years ago
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    no not to just explore, it falls under the job market here stinks and the education system is messed up for kids, although I don't have any/

  107. tiffanymak1996
    • 2 years ago
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    i'm a victim under the education system in hong kong :(

  108. godorovg
    • 2 years ago
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    yeah i have heard about that as well. I am a math person that you can graphs in my head and will be studying Engineering Physics soon

  109. godorovg
    • 2 years ago
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    I am what some would call human calc

  110. tiffanymak1996
    • 2 years ago
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    :) good for you, sometimes i do that , and miss steps in exams, got a b instead of a, frustrating

  111. godorovg
    • 2 years ago
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    yeah, that is why I tell all people that i work step by step in that way you can go back to see what is wrong.

  112. tiffanymak1996
    • 2 years ago
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    yeah, i know, that's why i have to be extra careful when i'm doing my exams. And i do tutoring, helps a lot with my presentation skills

  113. godorovg
    • 2 years ago
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    it drives me nuts sometimes on here when I see people skipping around. that is just plain doesn't make sense to me

  114. tiffanymak1996
    • 2 years ago
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    sometimes people skip unintentionally, you know, they calculate in their head, and skipped a few steps, sometimes they don't notice it.

  115. godorovg
    • 2 years ago
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    yes true and may be this is something I will have to deal with, still I can not understand why skip steps what does that prove?

  116. tiffanymak1996
    • 2 years ago
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    i personally think if one is confident with that particular question, and skipping a little steps is alright, just don't skip major ones, step on scrap papers, yes you can skip, but steps in exams, no.

  117. tiffanymak1996
    • 2 years ago
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    i just tell myself be considerate, and help the techer go through the papers as smoothly as possible, work hard for years just to make sure i won't skip anything.

  118. godorovg
    • 2 years ago
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    you just made a fan.

  119. tiffanymak1996
    • 2 years ago
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    u too.:), and thx.

  120. godorovg
    • 2 years ago
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    That is what I try to do here, only that I want the person I am helping to tell what they know and I help from that point

  121. godorovg
    • 2 years ago
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    I don't just do the work for them..

  122. tiffanymak1996
    • 2 years ago
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    yeah, sorry about that , will work hard for that, for me it's kind of harder to explain when not face to face

  123. godorovg
    • 2 years ago
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    yeah, I can how it could be hard for you, but if you want sometime I can give you tips on to do things a little better only if you want tips

  124. godorovg
    • 2 years ago
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    *see

  125. tiffanymak1996
    • 2 years ago
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    yeah, of course, pls do, i'm all ears :)

  126. godorovg
    • 2 years ago
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    okay first what type of math do you help with this mostly?

  127. tiffanymak1996
    • 2 years ago
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    algebra, calculas, and the basics, just high school stuff.

  128. godorovg
    • 2 years ago
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    okay with all these subjects, you need to get the student in which you are helping to tell what they need help with.

  129. godorovg
    • 2 years ago
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    than before you do any of the work have them show you what they know about that problem already and ask to see what they are having trouble with

  130. tiffanymak1996
    • 2 years ago
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    ok

  131. godorovg
    • 2 years ago
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    than once the it is clear, work the problem by typing it out in words and than draw it like you were doing. In the typing step by step always so the student can see what is happening where

  132. tiffanymak1996
    • 2 years ago
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    ok, thx a lot!

  133. godorovg
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    sometimes it won't matter if draw the problem if student doesn't get what is going on. So that is why I type it out in all steps

  134. tiffanymak1996
    • 2 years ago
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    yeah, i find that if students can figure out the problem themselves, it has a greater impression on them

  135. godorovg
    • 2 years ago
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    that is always my goal as well.

  136. godorovg
    • 2 years ago
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    for example this x/7-8=-10 the student wasn't getting it the whole thing that is why I typed out the steps to show that they are making it too hard.

  137. godorovg
    • 2 years ago
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    also to get the student to ask questions as well

  138. tiffanymak1996
    • 2 years ago
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    yeah, interaction helps.

  139. godorovg
    • 2 years ago
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    A must in math, because you and the student have to be involved in order to teach

  140. godorovg
    • 2 years ago
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    also just know you won't be there when they are tested. so have the student do the work and you just guide them

  141. godorovg
    • 2 years ago
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    unless they just not getting it.

  142. tiffanymak1996
    • 2 years ago
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    absolutly right, are you like, a teacher?

  143. godorovg
    • 2 years ago
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    No. I am a Physics Engineering major in college

  144. tiffanymak1996
    • 2 years ago
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    cool, always have love physics, physics rocks!

  145. godorovg
    • 2 years ago
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    yeah, and bio sucks

  146. tiffanymak1996
    • 2 years ago
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    same here!

  147. godorovg
    • 2 years ago
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    Chem and Physics oh yeah,,

  148. tiffanymak1996
    • 2 years ago
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    uh huh

  149. godorovg
    • 2 years ago
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    Bio not on your life

  150. godorovg
    • 2 years ago
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    Anything to do with math I love

  151. tiffanymak1996
    • 2 years ago
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    sry, mom needs me to have lunch, gotta go.

  152. godorovg
    • 2 years ago
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    okay have nice day

  153. godorovg
    • 2 years ago
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    cya latter

  154. tiffanymak1996
    • 2 years ago
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    talk later :)

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