Answer
$x+3z=1$
Work Step by Step
If we add twice the first equation ($2x-2y+2z=4$) to the second one, we get
$-x+2y+z+2x-2y+2z=-3+4\\x+3z=1$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 5, Systems of Equations and Inequalities - Section 5.2 - Systems of Linear Equations in Several Variables - 5.2 Exercises - Page 454: 1
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