Elementary Technical Mathematics

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

Chapter 5 - Section 5.3 - Addition and Subtraction of Polynomials - Exercise - Page 221: 41



Work Step by Step

We simplify by removing the parentheses and then add the like terms as follows: $$ (3a - 4b) - (2a - 7b)\\ =3a - 4b - 2a + 7b\\ =a+3b .$$
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