Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.5 - Addition of Real Numbers - Exercise Set: 25

Answer

$-3$

Work Step by Step

The addends (numbers being added have) different signs. To add two numbers with different signs, perform the following steps: (1) Subtract the smaller absolute from the bigger absolute value. $|-9|-|6|=9-6=3$ (2) Use the sign of the number with the bigger absolute value. $6+(-9)=-3$ Thus, the sum is $-3$.
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