Algebra: A Combined Approach (4th Edition)

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

Chapter 2 - Section 2.4 - An Introduction to Problem Solving - Practice: 2

Answer

The number is 12.

Work Step by Step

"Three times" translates to 3* "difference of a number and 5" translates to x - 5 "is the same as" translates to = "twice the number" translates to 2x "decreased by 3" translates to - 3 Therefore, the expression is written: 3(x - 5) = 2x - 3 Distribute: 3x - 15 = 2x - 3 Subtract 2x from both sides: x - 15 = -3 Add 15 to both sides: x = 12
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