Elementary Technical Mathematics

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

Chapter 5 - Section 5.2 - Simplifying Algebraic Expressions - Exercise - Page 218: 76



Work Step by Step

We simplify by removing the parentheses and combining the like terms as follows: $$ 13\left(7 x-2 \frac{1}{2}\right)-9\left(8 x+9 \frac{2}{3}\right)\\=13\left(7 x- \frac{5}{2}\right)-9\left(8 x+ \frac{29}{3}\right)\\ =91 x- \frac{65}{2}-72 x- 87\\ =19x-119\frac{1}{2} .$$
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