Elementary Algebra

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

Chapter 3 - Equations and Problem Solving - Chapter 3 Review Problem Set - Page 137: 34

Answer

The number is 7.

Work Step by Step

Let X represent the number that we need to find. Three times a certain number means 3X. 2 less than three times a certain number means 3X - 2. Nineteen is 2 less than three times a certain number means 19 = 3X - 2 To find X, we solve this equation. 19 = 3X - 2 21 = 3X 7 = X
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