Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 2 - Review Exercises: 20

Answer

x=-1

Work Step by Step

5x+9-7x+6=x+18 (5x-7x)+(9+6)=x+18 -2x+15=x+18 -2x=x+18-15 -2x=x+3 -2x-x=3 -3x=3 x=$\frac{3}{-3}$ x=-1 Check the answer. 5(-1)+9-7(-1)+6=(-1)+18 -5+9+7+6=17 4+7+6=17 11+6=17 17=17
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