I really need help on this
Find the sum of each pair of expressions.
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1. $\frac{3}{a b^2}, \frac{11}{b^3}$
2. $\frac{8}{a=b}, \frac{3}{2 a c}$
3. $\frac{101}{x-2}, \frac{19}{x-3}$
4. $\frac{17}{3 x} \cdot \frac{13}{x(x+1)}$
5. $\frac{6 u-1}{u^2-81}, \frac{2 u}{7(u-9)}$

I really need help on this Find the sum of each pair of expressions LOOK THE PHOTO FOR more content 1 frac3a b2 frac11b3 2 frac8ab frac32 a c 3 frac101x2 frac19 class=