91Ó°ÊÓ

In the following exercises, subtract.

$\frac{5r^2+7r-33}{r^2-49}-\frac{4r^2+5r+30}{r^2-49}$

Simplify the rational expression$\frac{8n-96}{3n-36}$.

In the following exercises, subtract.

$\frac{7t^2-t-4}{t^2-25}-\frac{6t^2+12t-44}{t^2-25}$

In the following exercises, add or subtract.

$\frac{10v}{2v-1}+\frac{2v+4}{1-2v}$

In the following exercises, add or subtract.

$\frac{20w}{5w-2}+\frac{5w+6}{2-5w}$

In the following exercises, add or subtract.

$\frac{10x^2+16x-7}{8x-3}+\frac{2x^2+3x-1}{3-8x}$

In the following exercises, add or subtract.

$\frac{6y^2+2y-11}{3y-7}+\frac{3y^2-3y+17}{7-3y}$

In the following exercises, add or subtract.

$\frac{z^2+6z}{z^2-25}-\frac{3z+20}{25-z^2}$

In the following exercises, add or subtract.

$\frac{a^2+3a}{a^2-9}-\frac{3a-27}{9-a^2}$

In the following exercises, add or subtract.

$\frac{2b^2+30b-13}{b^2-49}-\frac{2b^2-5b-8}{49-b^2}$