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Thread: Solving for y (+rep)

  1. #1

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    Solving for y (+rep)

    Solved
    Last edited by learningtoneopet1; 06-12-2014 at 12:14 AM.

  2. #2

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    Recognize that 2y-6 is just 2(y-3).

    Rewrite the equation with common denominator so it looks like
    6/2(y-3) = -1/2(y-3) + 2(y-3)/2(y-3)

    Now multiply 2(y-3) from the left side to the right, so now the denominators cancel out.

    You are left with:
    6 = -1 + 2(y-3)
    6 = -1 + 2y - 6
    13 = 2y
    y= 13/2 or 6.5

  3. The Following 2 Users Say Thank You to boomer For This Useful Post:

    learningtoneopet1 (06-12-2014),Skarl (06-12-2014)

  4. #3

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    [3/(y-3)] = [(-1+2y-6)/(2y-6)]
    [3/(y-3)] = [(2y-7)/(2y-6)]
    cross multiplying,
    [3(2y-6)] = [(y-3)(2y-7)]
    [6y-18] = [(2y^2)-7y-6y+21]
    [6y-18] = [(2y^2)-13y+21]
    0=(2y^2)-13y+21-6y+18
    0=(2y^2)-19y+39
    0=(y-3)(2y-13)
    thus, y=3( reject), y=13/2

    tell me if you do not understand my working
    Last edited by tzh440; 06-12-2014 at 12:11 AM.

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    learningtoneopet1 (06-12-2014),Skarl (06-12-2014)

  6. #4

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    Thank guys!

    You must spread some Reputation around before giving it to boomer again.

    I'll rep you when I can @(you need an account to see links)

  7. The Following 3 Users Say Thank You to learningtoneopet1 For This Useful Post:

    boomer (06-12-2014),Skarl (06-12-2014),tzh440 (06-12-2014)

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