Answer
16
Work Step by Step
The associative property of addition holds that $a+(b+c)=(a+b)+c$ (for real numbers $a$, $b$, and $c$).
Therefore, $-4+(12+8)=(-4+12)+8=(12-4)+8=8+8=16$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter R - Section R.4 - Properties of Real Numbers - R.4 Exercises - Page 38: 44
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