Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - 2.3 - Real Numbers and Algebraic Expressions - Problem Set 2.3: 24

Answer

-7.2

Work Step by Step

Recall the following rule: $a-(-b)=a+b$ Thus, we obtain: $-21.4-(-14.2)=-21.4+14.2=-7.2$
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