Answer
$\frac{11}{15}x$
Work Step by Step
We first apply the distributive property. Then, we simplify the resultant expression:
$\frac{1}{3}x+\frac{2}{5}x$
=$x(\frac{1}{3}+\frac{2}{5})$
=$x(\frac{1(5)+2(3)}{15})$
=$x(\frac{5+6}{15})$
=$x(\frac{11}{15})$
=$\frac{11}{15}x$