Answer
$-54$
Work Step by Step
$-6\times9$ is the same as the opposite of $6\times9$, which in turn is the same as $9+9+9+9+9+9$. So if $9\times6$ is $54$, just take the opposite to get the solution, $-54$.
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 2 - Cumulative Review - Page 161: 48
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