#### Answer

$\frac{5}{8}$

#### Work Step by Step

The additive inverse (opposite) of a number $a$ is the number on the opposite side of the number line that is the same distance away from 0 as $a$. In general, we can write a negative sign in front of a number to find its opposite.
$-(-\frac{5}{8})=+\frac{5}{8}=\frac{5}{8}$