Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 3 - Equations and Problem Solving - 3.2 - Equations and Problem Solving - Problem Set 3.2: 55

Answer

The number is 6

Work Step by Step

Let X represent the number we need to find: Three times a certain number means 3X. If 6 is added to three times a certain number, we write 6 + 3X. Thus: $6 + 3X = 24$ Subtract 6 from both sides: $3X = 18$ Divide both sides by 3: $X = 6$
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