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math

posted by on .

sovle the following equation

8/x-1=9/(x)(x+2)

i know the answer is -1,7 but how?

  • math - ,

    I subbed your solution values into the equation the way you typed it and neither solution works

    they do work if you meant

    8/x - 1 = 9/(x(x+2)) ,
    so I will start from there

    multiply each term by x(x+2)

    8(x+2) - x(x+2) = 9
    8x + 16 - x^2 - 2x = 9
    x^2 -6x -7 = 0
    (x-7)(x+1) = 0
    x = 7 or x = -1

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