Answer
$-25$
Work Step by Step
The things being added have the same signs, so add the absolute values. The sum has the same sign as the original addends.
Thus,
$(-12)+(-13)
\\=-(|-12|+|-13|)
\\= -(12+13)
\\=-25$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
Published by
Cengage Learning
ISBN 10:
1285194055
ISBN 13:
978-1-28519-405-9
Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - Chapter 1 Review Problem Set - Page 37: 2
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