Answer
$\frac{7x}{15}$
Work Step by Step
$\frac{3x}{10}$ + $\frac{x}{6}$
=$\frac{3x\times3}{10\times3}$ +$\frac{x\times5}{6\times5}$
LCD of 10 and 6 is 30
=$\frac{9x}{30}$ +$\frac{5x}{30}$
=$\frac{9x+5x}{30}$
=$\frac{14x}{30}$
=$\frac{2\times7x}{2\times15}$
=$\frac{7x}{15}$
