Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - 9.8 Using Equations to Solve Application Problems - 9.8 Exercises: 29

Answer

The number is $6$.

Work Step by Step

Let $x =$ the number $5x + 12 = 7x$ $5x - 7x = -12$ $-2x = -12$ $x = \frac{-12}{-2}$ $x = 6$
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