Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Review Exercises: 24

Answer

$13$

Work Step by Step

First, recall that $a-(-b)=a+b$ $=-7 +20$ The numbers have the opposite signs, so subtract the smaller absolute value from the bigger absolute value, and then apply the sign of the addend with the higher absolute value to the answer. Thus, we obtain: $ \\=|20|-|-7| \\=20-7 \\=13$
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