Answer
$x=-3,y=-2$
Work Step by Step
$3x+3y=-15\\x+y=-5\\x=-5-y$
Thus $5(-5-y)-9y=3\\-25-5y-9y=3\\-14y=28\\y=-2$
Then $x=-5-(-2)=-3$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
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 - Guided Practice for Examples 1 and 2 - Page 161: 2
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