# Chapter 1 - Section 1.5 - Addition of Real Numbers - Exercise Set - Page 63: 23

$4$

#### 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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