Answer
-10
Work Step by Step
When adding numbers of different signs, we subtract the absolute values (22 - 12 = 10), and take the sign of the number with the larger absolute value, which is negative here (-10).
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1 - Introduction to Algebraic Expressions - 1.5 Addition of Real Numbers - 1.5 Exercise Set - Page 42: 24
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