Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 2 - Cumulative Review: 48



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, $-54$.
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