Answer
$\frac{32y+15x}{20xy}$.
Work Step by Step
In order to add or subtract fractions, we start by making a common denominator (bottom of the fraction). Thus, we multiply 8/5x by 4y/4y and 3/4y by 5x/5x to obtain:
$\frac{32y}{20xy}$+($\frac{15x}{20xy}$)=$\frac{32y+15x}{20xy}$.
