#### Answer

$\frac{-9a^{3}}{b^{7}}$

#### Work Step by Step

Step 1: $-9a^{3}b^{-7}$
Step 2: $-9\times a^{3}\times b^{-7}$
Step 3: $\frac{-9a^{3}}{b^{7}}$

Published by
Brooks Cole

ISBN 10:
0-53449-636-9

ISBN 13:
978-0-53449-636-4

$\frac{-9a^{3}}{b^{7}}$

Step 1: $-9a^{3}b^{-7}$
Step 2: $-9\times a^{3}\times b^{-7}$
Step 3: $\frac{-9a^{3}}{b^{7}}$

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