Answer
$\frac{4}{5}$
Work Step by Step
$\frac{1}{5}$ + $\frac{3}{5}$ = $\frac{1 + 3}{5}$ = $\frac{4}{5}$
Add the numerators
$4$ is the sum of the numerators
$5$ is the same denominator
$\frac{4}{5}$ is already in lowest terms.
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