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: 23

Answer

$4$

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 their absolute values. $|12|-|-8|=12-8=4$ (2) Use the sign of the number with the bigger absolute value. $12+(-8)=4$ Thus, the sum is $4$.
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