#### Answer

a.
$\frac{17}{5}$
b.
$\frac{44}{7}$

#### Work Step by Step

a.
3$\frac{2}{5}$=3+$\frac{2}{5}$= write 3 like $\frac{15}{5}$
=$\frac{15}{5}$+$\frac{2}{5}$=$\frac{17}{5}$
b.
6$\frac{2}{7}$=6+$\frac{2}{7}$= write 6 like $\frac{42}{7}$
=$\frac{42}{7}$+$\frac{2}{7}$=$\frac{44}{7}$