Answer
$$b-12.$$
Work Step by Step
We simplify by removing the parentheses and then add the like terms as follows:
$$ (2b -5) +3b + (-4b- 7)=2b -5 +3b -4b- 7\\ =b-12.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
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: 22
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