9.

15 + 9x-7
= 9
x x + 2

2. Originally Posted by gnarlycarly227
9.

15 + 9x-7
= 9
x x + 2
I'm assuming:

$\frac{15}{x} + \frac{9x-7}{x+2} = 9$

The common denominator is $(x)(x + 2)$, multiply every term by it.

$15(x+2) + (9x-7)(x) = 9(x)(x + 2)$

$15x + 30 + 9x^2 - 7x = 9x^2 + 18x$

$15x + 30 - 7x + 9x^2 - 9x^2 - 18x = 0$

$-10x = - 30$

$x = 3$