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22 December, 04:39

1/3 (y+7) = (y-1) y = what?

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  1. 22 December, 05:07
    0
    y=5

    Step-by-step explanation:

    1/3 (y+7) = (y-1)

    I will multiply by 3 on each side to get rid of the fractions

    3*1/3 (y+7) = (y-1) * 3

    y+7 = 3 * (y-1)

    Distribute the 3

    y+7 = 3y - 3

    Subtract y from each side

    y-y+7 = 3y-y-3

    7 = 2y-3

    Add 3 to each side

    7+3 = 2y-3+3

    10=2y

    Divide each side by 2

    10/2 = 2y/2

    5 = y
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