#### Answer

$\frac{1}{5}$

#### Work Step by Step

To divide fractions multiply by the reciprocal of the divisor.
(-$\frac{3}{7}$)$\div$(-$\frac{15}{7}$)
(-$\frac{3}{7}$)$\times$(-$\frac{7}{15}$)
($\frac{(3)(7)}{(7)(15)}$)
$\frac{(3)}{(15)}$
$\frac{3}{15}$
$\frac{1}{5}$