Basic College Mathematics (9th Edition)

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

Published by Pearson

ISBN 10: 0321825535

ISBN 13: 978-0-32182-553-7

Chapter 1 - Whole Numbers - 1.3 Subtracting Whole Numbers - 1.3 Exercises - Page 28: 38

Answer

Work Step by Step

7 is less than 9, so in order to subtract we first have to regroup from the tens digit to turn 7 to 17. Then we subtract 17-9 = 8 for the ones column, and we subtract 3-2 = 1 for the tens column. From the 1 in the tens place and 8 in the ones place, we get 18.

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