College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 1 - Section 1.1 - Linear Equations - 1.1 Exercises - Page 84: 1



Work Step by Step

$2x+7=x-1$ subtract x from both sides $x+7=-1$ subtract 7 from both sides $x=-8$ Check: $2x+7=x-1$ substitute (-8) for x $2\times(-8)+7=(-8)-1$ multiply first $(-16)+7=(-8)-1)$ now add/subtract $(-9)=(-9)$ statement is true;hence, the solution is true
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