Elementary Technical Mathematics

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

Chapter 2 - Review - Page 133: 21



Work Step by Step

We simplify by removing the parenthesis and add the terms as follows: $$ \left( -\frac{6}{7} \right)-\left( -\frac{5}{-6} \right)= -\frac{6}{7}+\frac{5}{6}\\ =\frac{-36+35}{42}=-\frac{1}{42}.$$
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