Answer
$\displaystyle \frac{7x-23}{x+1}$
Work Step by Step
Logarithms are one-to-one, meaning that
if $\log_{b}M=\log_{b}N,$ then $ M=N.$
Here, it follows that
$\displaystyle \frac{7x-23}{x+1}=x-3$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 3 - Section 3.4 - Exponential and Logarithmic Equations - Concept and Vocabulary Check - Page 488: 7
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