Prealgebra (7th Edition)

$\frac{1}{2y}$
$\frac{3}{10y}$ +$\frac{2}{10y}$ Add the numerator, Keep the common denominator. =$\frac{3+2}{10y}$ =$\frac{5}{10y}$ =$\frac{5\times1}{5\times2y}$ =$\frac{1}{2y}$