Answer
-7.8
Work Step by Step
Recall the following rule:
$a-(-b)=a+b$
Thus, we obtain:
$-17.2-(-9.4)=-17.2+9.4=-7.8$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
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 - Page 68: 23
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