Elementary Technical Mathematics

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

Chapter 2 - Section 2.2 - Subtraction of Signed Numbers - Exercises - Page 112: 49



Work Step by Step

Change the sign of the number being subtracted, then add. $(-7)-(+6)+(-3)-(-2)-(+9)=(-7)+(-6)+(-3)+(+2)+(-9)=(+2)+(-25)=-23$
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