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anonymous

  • 5 years ago

what is 5/6 +5 -4/8= i am lost with that

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  1. anonymous
    • 5 years ago
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    yes it is

  2. sandra
    • 5 years ago
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    ok so first let's try reducing the individual parts, e.g. -4/8 = -1/2

  3. sandra
    • 5 years ago
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    so now you want to find the lowest common denominator for 5/6, 5, and -1/2

  4. sandra
    • 5 years ago
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    to me that looks like 6

  5. sandra
    • 5 years ago
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    so now you want to convert everything to sixths so you can add them up

  6. sandra
    • 5 years ago
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    so 5/6 is done

  7. sandra
    • 5 years ago
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    5 = 5*6/6 = 30/6

  8. sandra
    • 5 years ago
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    and -1/2 = -1/2 * 3/3 = -3/6

  9. sandra
    • 5 years ago
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    so now let's add it up: 5/6 +30/6 -3/6 = (5+30-3)/6 = 32/6

  10. sandra
    • 5 years ago
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    now you want to reduce that fraction, so again we need a common divider

  11. sandra
    • 5 years ago
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    looks like the only common divisor is 2

  12. sandra
    • 5 years ago
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    so 32/6 = 16/3

  13. sandra
    • 5 years ago
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    now if you want to , you can change that into a mixed fraction

  14. sandra
    • 5 years ago
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    so 16/3 = 15/3 + 1/3 = 5 and 1/3

  15. anonymous
    • 5 years ago
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    ok i am back

  16. sandra
    • 5 years ago
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    hey! wb

  17. sandra
    • 5 years ago
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    did that make sense?

  18. anonymous
    • 5 years ago
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    srry my cumputer is giving me problemes agine yes it did thanx

  19. sandra
    • 5 years ago
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    ok great =)

  20. sandra
    • 5 years ago
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    the basic point is, anything x 1 = the same thing

  21. sandra
    • 5 years ago
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    so you can always multiple by various forms of 1 to get a common denominator

  22. anonymous
    • 5 years ago
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    ok

  23. sandra
    • 5 years ago
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    so in the above, since I decided we needed a 6 on the bottom of all the fractions (common denominator), I multiplied 5 by 6/6 , and -1/2 by 3/3

  24. sandra
    • 5 years ago
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    to get 30/6 and -3/6

  25. sandra
    • 5 years ago
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    to reduce fractions, you're still essentially multiplying by 1

  26. sandra
    • 5 years ago
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    so to reduce 32/6, I divided both the top and bottom by 2

  27. anonymous
    • 5 years ago
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    how dothen do u flip it

  28. anonymous
    • 5 years ago
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    sorry then do u flip it

  29. sandra
    • 5 years ago
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    so how do you mean flip it

  30. sandra
    • 5 years ago
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    reducing fractions is still multiplying (or dividing if you will) by 1

  31. sandra
    • 5 years ago
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    just you're making the numbers smaller instead of bigger

  32. anonymous
    • 5 years ago
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    32 is on top then 6 is on the bottem you flip it to were the 6 is on top and the 32 is on the bottem

  33. sandra
    • 5 years ago
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    in reality, it's easiest to think "if I divide both the top and bottom of the fraction by the same thing, it will still be equivalent"

  34. anonymous
    • 5 years ago
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    oh ok that make senc

  35. anonymous
    • 5 years ago
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    i am not good at math

  36. sandra
    • 5 years ago
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    it's ok, nobody starts out good at math. takes lots of practice and not giving up on it

  37. sandra
    • 5 years ago
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    so let's do another example: reduce 48/12

  38. anonymous
    • 5 years ago
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    ok

  39. sandra
    • 5 years ago
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    your thought process should be: "what is the biggest number that evenly divides into both the top and the bottom"

  40. sandra
    • 5 years ago
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    and then do that

  41. sandra
    • 5 years ago
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    and it's ok if you don't know off the top of your head what the biggest number is

  42. sandra
    • 5 years ago
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    that also comes with practice

  43. sandra
    • 5 years ago
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    but you at least know in the above case, since bot the top and bottom are even, you can divide both of them by 2

  44. sandra
    • 5 years ago
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    so go ahead and try to reduce 48/12

  45. sandra
    • 5 years ago
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    I'll do a first step

  46. sandra
    • 5 years ago
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    48/12 = (48/2) / (12/2) = 24/6. I know that's true because I divided by 2/2, which is 1, and anyting divided by 1 = itself

  47. anonymous
    • 5 years ago
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    ok that is what i got to

  48. sandra
    • 5 years ago
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    ok, now the next question you should ask yourself is if there is another number you can divide 24/6 by to get a smaller fraction - by smaller I mean smaller numbers on the top and bottom

  49. sandra
    • 5 years ago
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    that process is called reducing

  50. anonymous
    • 5 years ago
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    i am geting so made at my comeputer right know

  51. anonymous
    • 5 years ago
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    if i log out agine i will get back on ok it is my computer

  52. sandra
    • 5 years ago
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    ok np

  53. anonymous
    • 5 years ago
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    we can divide 2 in to 24 and 6

  54. anonymous
    • 5 years ago
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    oh nvm not six

  55. anonymous
    • 5 years ago
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    and if it seems i am not i am i just in a livsseion i go to flvs

  56. anonymous
    • 5 years ago
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    but i will tell you be for i go tho ok

  57. sandra
    • 5 years ago
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    kk, well you were actually right - you *can* divide both 24 and 6 by 6 =)

  58. sandra
    • 5 years ago
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    so I would do that

  59. anonymous
    • 5 years ago
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    it would come ou to be 4/1

  60. anonymous
    • 5 years ago
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    i think not sure tho

  61. sandra
    • 5 years ago
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    you're right =) . and 4/1 is actually 4

  62. sandra
    • 5 years ago
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    good work =)

  63. sandra
    • 5 years ago
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    so how would you check to see if you're right?

  64. sandra
    • 5 years ago
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    an easy way to check is with a calculator

  65. sandra
    • 5 years ago
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    is 48/12 = 4/1 = 4?

  66. anonymous
    • 5 years ago
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    ok thanx you vary much

  67. sandra
    • 5 years ago
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    no problem!

  68. sandra
    • 5 years ago
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    so just remember - you can always multiply the top and the bottom by the same thing, to get an equivalent fraction. that's useful for getting a common denominator to make adding/subtracting fractions easier

  69. sandra
    • 5 years ago
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    and that's because you're *Actually* just multiplying by 1

  70. anonymous
    • 5 years ago
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    ok the way my techer did it was confusing

  71. sandra
    • 5 years ago
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    and anything times 1 is the same exact thing, just written in a different way

  72. sandra
    • 5 years ago
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    now when you're "reducing" fractions, all you're trying to do is get the top and bottom numbers as small as possible

  73. sandra
    • 5 years ago
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    for that, you can always divide both the top and bottom by the same thing, to get an equivalent fraction

  74. anonymous
    • 5 years ago
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    know with that rule does it count with 0 to

  75. sandra
    • 5 years ago
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    since in reality, you're just dividing tat number by 1

  76. sandra
    • 5 years ago
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    and anything divided by 1 is the same thing, just written in a different way

  77. sandra
    • 5 years ago
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    well, you can't divide by 0

  78. sandra
    • 5 years ago
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    or else the world explodes =)

  79. anonymous
    • 5 years ago
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    ok @};-

  80. anonymous
    • 5 years ago
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    is open study only for math

  81. sandra
    • 5 years ago
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    that I know of

  82. sandra
    • 5 years ago
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    well, I think there's another UI they have

  83. sandra
    • 5 years ago
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    but that's over at openstudy.com, and I don't think the logins are shared

  84. sandra
    • 5 years ago
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    I like this one more

  85. anonymous
    • 5 years ago
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    ok i think it should make it for all subjegs but i guess it dos not relly matter tho

  86. sandra
    • 5 years ago
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    what else are you taking?

  87. anonymous
    • 5 years ago
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    i am taking teck math langue arts chess and on the side i am lourning chines japens spanish french

  88. anonymous
    • 5 years ago
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    i mean tech for cumputers

  89. anonymous
    • 5 years ago
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    nehow

  90. anonymous
    • 5 years ago
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    means hello in chines

  91. anonymous
    • 5 years ago
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    2 to 4 i have a chess compition

  92. sandra
    • 5 years ago
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    oh awesome =)

  93. sandra
    • 5 years ago
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    that's a lot!

  94. anonymous
    • 5 years ago
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    yea but in reality i should lour alot more cuz i mean i am not big on politics but ii do know alot about how most school seystem r laking on some eguoction

  95. anonymous
    • 5 years ago
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    my friend is in 8th he deos not know anthing but it is also the pareints to not all on the schools

  96. anonymous
    • 5 years ago
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    the schools can only teach so much in won day and they can not stay on won topec for long

  97. anonymous
    • 5 years ago
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    i am not going to lie i use to be won of thos kide who were like when am i ever going to use any of this stuff but in reality u use it all the time

  98. anonymous
    • 5 years ago
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    even if you relis it or not

  99. sandra
    • 5 years ago
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    haha yeah agree, it's definitely really useful in the end

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