Answer
$-\dfrac{1}{63}$
Work Step by Step
Multiply the numerators together and the denominators together to obtain:
$=\dfrac{-1 \times 1}{9 \times 7}
\\=-\dfrac{1}{63}$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 2 - Section 2.4 - Signed Fractions - Exercises - Page 118: 17
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