Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Appendix A - A.1 - Algebraic Expressions - Exercises - Page 540: 3c

Answer

$2$

Work Step by Step

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