Answer
$-38
Work Step by Step
To add two numbers with the same sign, we add their absolute values, and assign sum the same sign as both of the numbers.
Therefore: $$(-15)+(-23)=-(|15|+|23|)=-(15+23)=-38$$
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Skills Handbook - Simplifying Expressions With Integers - Exercises - Page 975: 3
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