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 - Exercise Set: 1

Answer

2x + 7 = x + 6; x = -1

Work Step by Step

"twice a number" translates to 2x. "the sum of twice a number and 7" translates to 2x + 7. "the sum of the number and 6" translates to x + 6. Therefore, the equation is: 2x + 7 = x + 6 Solve for x: x + 7 = 6 x = -1
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