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: 44

Answer

+1

Work Step by Step

Change the sign of the number being subtracted, then add. $(+1)+(-7)-(-7)=(+1)+(-7)+(+7)=(+8)+(-7)=+1$
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