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 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Exercise Set: 18

Answer

$-5.5$

Work Step by Step

The addends have different signs, so to add them, perform the following steps: (1) Subtract the smaller absolute value from the bigger absolute value. $|-7.9|-|2.4| = 7.9-2.4 =5.5$ (2) The sum will have the same sign as the number with the bigger absolute value. $|-7.9|\gt |2.4|$ Thus, $-7.9+2.4=-5.5$
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