Algebra and Trigonometry 10th Edition

by Larson, Ron

Published by Cengage Learning

ISBN 10: 9781337271172

ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.2 - Linear Equations in One Variable - 1.2 Exercises - Page 87: 17

Answer

-9

Work Step by Step

Solve equation 7 - 2x = 25 7 = 2x + 25 2x = 7 - 25 = -18 x = -9 Check the solution : 7 - 2x = 25 7 - 2(-9) = 7 + 18 = 25 (LHS) RHS = 25 LHS = RHS, Hence Verified

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