#### Answer

$-\dfrac{1}{63}$

#### Work Step by Step

Multiply the numerators together and the denominators together to obtain:
$=\dfrac{-1 \times 1}{9 \times 7}
\\=-\dfrac{1}{63}$

Published by
Brooks Cole

ISBN 10:
1285199197

ISBN 13:
978-1-28519-919-1

$-\dfrac{1}{63}$

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