Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 12 - Review: 28



Work Step by Step

Step 1: $25^{x-1}=125$ Step 2: $(5^{2})^{x-1}=5^{3}$ Step 3: $5^{2x-2}=5^{3}$ Step 4: $2x-2=3$ Step 5: $2x=3+2$ Step 6: $2x=5$ Step 7: $x=\frac{5}{2}$
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