Answer
x = -7
Work Step by Step
1. Given: 7x - 5x + 15 = x + 8
2. Simplify: 2x + 15 = x + 8
3. Subtract: x = -7
4. Check: 7(-7) - 5(-7) + 15 = -7 + 8
1 = 1, so the solution is correct.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter 1 - Section 1.1 - Linear Equations in One Variable - 1.1 Exercises - Page 51: 23
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