Algebra: A Combined Approach (4th Edition)

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

Chapter 2 - Cumulative Review - Page 187: 42

Answer

The number is 6

Work Step by Step

"A number increased by 4" translates to x + 4. "3 times the number decreased by 8" translates to 3x - 8. The equation is written as: x + 4 = 3x - 8 Solve for x. Subtract 3x from both sides; -2x + 4 = -8 Subtract 4 from both sides: -2x = -12 Divide both sides by -2: x = 6
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