Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - 1.1 Linear Equations - 1.1 Exercises: 43

Answer

$B=\dfrac{2A}{h}-b$

Work Step by Step

$A=\dfrac{1}{2}h(B+b)$ $,$ for $B$ Take the $2$ to multiply the left side: $2A=h(B+b)$ Take $h$ to divide the left side: $\dfrac{2A}{h}=B+b$ Take $b$ to subtract the left side: $\dfrac{2A}{h}-b=B$ Rearrange: $B=\dfrac{2A}{h}-b$
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