Answer
$7$
Work Step by Step
$5-(-2)$
since - (minus) and - (minus) give us a + (plus) we can write
$5+2=7$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 1, Equations and Inequalities - 1.1 Apply Properties of Real Numbers - 1.1 Exercises - Mixed Review - Page 9: 68
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