91Ó°ÊÓ

In the following exercise, simplify:$-\frac{4x}{32y}$

In the following exercise, simplify:$\frac{14x^2}{21y}$

In the following exercise, simplify:$\frac{24a}{32b^2}$

In the following exercise, multiply:$\frac{3}{4}.\frac{9}{10}$

In the following exercise, multiply:$\frac{4}{5}.\frac{2}{7}$

In the following exercise, multiply:$-\frac{2}{3}(-\frac{3}{8})$

In the following exercises, round each number to the nearest (a) hundred, (b) thousand, (c) ten thousand.

$4,287,965$

In the following exercise, multiply:$-\frac{3}{4}(-\frac{4}{9})$

In the following exercise, multiply:$-\frac{5}{9}.\frac{3}{10}$

In the following exercise, multiply:$-\frac{3}{8}.\frac{4}{15}$