Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Appendix A - A.1 - Algebraic Expressions - Exercises: 5c

Answer

$2$

Work Step by Step

Use commutative axiom for addition: $(-5)+7=7-5$ $7-5=2$
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