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 1 - Whole Numbers - 1.3 Subtracting Whole Numbers - 1.3 Exercises - Page 28: 21

Answer

Work Step by Step

Given that the difference between 54 and 42 is 12 we use addition to check the answer to a subtraction problem. 42+12=54 Check The number needed to complete the check is 12.

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