Pre-Algebra Examples

$7 a^{- 5} b^{3}$

Step 1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$7 \frac{1}{a^{5}} b^{3}$

Step 2

Combine $7$ and $\frac{1}{a^{5}}$ .

$\frac{7}{a^{5}} b^{3}$

Step 3

Combine $\frac{7}{a^{5}}$ and $b^{3}$ .

$\frac{7 b^{3}}{a^{5}}$