91Ó°ÊÓ

In the following exercises, perform indicated operations.

$\frac{4}{cd+3c}+\frac{1}{d^2-9}$

In the following exercises, perform indicated operations.

$\frac{-3m}{3m-3}+\frac{5m}{m^2+3m-4}$

In the following exercises, perform indicated operations.

$\frac{8}{4n+4}+\frac{6}{n^2-n-2}$

In the following exercises, perform indicated operations.

$\frac{3r}{r^2+7r+6}+\frac{9}{r^2+4r+3}$

Simplify the rational expression$\frac{y^2+3y-4}{y^2-6y+5}$

In the following exercises, perform indicated operations.

$\frac{2s}{s^2+2s-8}+\frac{4}{s^2+3s-10}$

In the following exercises, perform indicated operations.

$\frac{t}{t-6}-\frac{t-2}{t+6}$

In the following exercises, perform indicated operations.

$\frac{x-3}{x+6}-\frac{x}{x+3}$

In the following exercises, perform indicated operations.

$\frac{5a}{a+3}-\frac{a+2}{a+6}$

In the following exercises, perform indicated operations.

$\frac{3b}{b-2}-\frac{b-6}{b-8}$