91Ó°ÊÓ

Multiply each of the following. Be sure all answers are written in lowest terms. $$\frac{a^{2} b}{c} \cdot \frac{c^{3}}{a b^{2}}$$

Find the LCD for each of the following; then use the methods developed in this section to add or subtract as indicated. $$\frac{5}{12}-\left(-\frac{3}{8}\right)$$

Find the following sums. (Add.) \(7 \frac{1}{10}+8 \frac{3}{10}+2 \frac{7}{10}\)

Find the following sums. (Add.) \(5 \frac{2}{7}+8 \frac{1}{7}+3 \frac{5}{7}\)

Find the following sums. (Add.) \(3 \frac{1}{2}+8 \frac{1}{3}+5 \frac{1}{6}\)

Reduce each fraction to lowest terms. $$\frac{180 x y z}{108 x y}$$

Simplify each complex fraction as much as possible. [Examples 4–7] $$\frac{3+\frac{5}{2}}{\frac{5}{6}+\frac{1}{4}}$$

Change to improper fractions. $$1 \frac{3}{5}$$

Write each number as an equivalent fraction with denominator \(24 a\). $$2$$

Simplify each complex fraction as much as possible. [Examples 4–7] $$\frac{9-\frac{3}{2}}{\frac{7}{4}}$$