## Algebra: A Combined Approach (4th Edition)

$\frac{ad}{bc}$
Step 1: $\frac{a}{b}\div\frac{c}{d}$ Step 2: $\frac{a}{b}\times\frac{d}{c}$ Step 3: $\frac{ad}{bc}$ Step 4: The expression cannot be reduced further so the answer is $\frac{ad}{bc}$