Answer
$x=-12$
Work Step by Step
$7-x+x=19+x\\7=19+x\\7-19=19+x-19\\-12=x$
Checking the solution: $7-(-12)+(-12)=7+12-12=7=19+(-12)=19-12$, which is true.
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: 16
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