### Home > A2C > Chapter Ch11 > Lesson 11.2.4 > Problem 11-88

11-88.

Multiply the entire equation by *x* and *x* − 7.

3*x* − 21 + 5*x* = −2*x*^{2} + 14*x*

Set the equation into standard format.

2*x*^{2} − 6*x* − 21 = 0

Use the quadratic formula.

Multiply by the entire equation by 12.

6*x* + 9 − 2*x* + 14 = 2*x* − 3

Solve for *x*.

2*x* = −26

*x* = −13