Basic College Mathematics (10th Edition)

by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.

Published by Pearson

ISBN 10: 0134467795

ISBN 13: 978-0-13446-779-5

Chapter 9 - Basic Algebra - Summary Exercises - Operations with Signed Numbers - Page 656: 9

Answer

Work Step by Step

5 - (-7) Subtraction Change subtraction to addition Negative 7 is changed to its opposite,(+7) 5 + (+7) = 12

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