Answer
$-\frac{3y}{8x}$
Work Step by Step
The given expression is equivalent to
$$
\frac{\frac{-3}{x}}{\frac{8}{y}}=\frac{-3}{x}\div\frac{8}{y}
.$$
Multiplying by the reciprocal of the divisor, the expression above is equivalent to
$$
\frac{-3}{x}\cdot\frac{y}{8}=-\frac{3y}{8x}
.$$Hence, the given expression simplifies to $-\frac{3y}{8x}$.
