Answer
$x+3z=1$
Work Step by Step
$x-y+z=2 $
$-x+2y+z=-3$
Multiply the first equation by 2.
$2x-2y+2z=4$
Add the new equation to the second equation.
$x+3z=1$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 10 - Section 10.2 - Systems of Linear Equations in Several Variables - 10.2 Exercises - Page 696: 1
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