## Basic College Mathematics (9th Edition)

Multiplication of fractions goes by combining all numerators with the other numerators. Here, we need to multiply all numerators together. Same holds for the denominator. We multiply all denominators with the other denominators. As example: $\frac{7}{5} \cdot \frac{2}{3} = \frac{7 \cdot 2}{5 \cdot 3} = \frac{14}{15}$. We multiplied both numerators $7$ and $2$. We repeated the same step for the denominators $5$ and $3$ and multiplied them.