Answer
b=18
Work Step by Step
First, we multiply both sides by 2:
$2b = 27\times 2 - \frac{b}{2} \times 2 = 54 - b$
We add $b$ to both sides:
$2b + b = 3b = 54$
Then, we divide both sides by 3:
$b = 54\div 3 = 18$
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Appendix A - A.2 - Formulas and Equations - Exercises - Page 540: 26
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