Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 3 Linear Systems and Matrices - 3.2 Solve Linear Systems Algebraically - 3.2 Exercises - Quiz for Lessons 3.1-3.2 - Page 167: 7


$x=-4$ and $y=-8$

Work Step by Step

$3x-y=-4$ $x+3y=-28$ -->$x=-28-3y$ when $x=-28-3y$... $3x-y=-4$ $3(-28-3y)-y=-4$ $-84-9y-y=-4$ $10y=-80$ $y=-8$ when $y=-8$.... $x+3y=-28$ $x-24=-28$ $x=-4$
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