Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 2 - Cumulative Review - Page 134: 19

Answer

$$+10.$$

Work Step by Step

We simplify by removing parentheses as follows $$-8+(+9)+(-3)-(-12)=-8+9-3+12=+10.$$
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