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Math Help - variables

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    variables

    how do you show your work for 54/y+y=15
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    Quote Originally Posted by rambow30 View Post
    how do you show your work for 54/y+y=15
    \frac{54}{y} + y = 15

    Multiply both sides by y:
    54 + y^2 = 15y

    y^2 - 15y + 54 = 0

    (y - 6)(y - 9) = 0

    So y = 6 or 9.

    -Dan
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