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 - Guided Practice for Examples 1 and 2 - Page 161: 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 $x=-5-(-2)=-3$
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