Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 9 - Basic Algebra - 9.2 Adding and Subtracting Signed Numbers - 9.2 Exercises - Page 638: 12



Work Step by Step

To add $-7+(-3)$, we can take the absolute value of both numbers. $|-7|=7$ $|-3|=3$ To add two negative numbers, we can add the absolute value of both numbers and then add a negative sign in front of the result. $|-7|+|-3|=7+3=10$ Therefore, $-7+(-3)=-10$.
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