Prealgebra (7th Edition)

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

Chapter 2 - Section 2.2 - Adding Integers - Exercise Set - Page 112: 23



Work Step by Step

$|-640|=640, |-200|=200$, and $640+200=840$. Their common sign is negative, so the sum is negative: $-640+(-200)=-840$
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