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 - Skill Practice - Page 164: 3


$$x=6. y=-1$$

Work Step by Step

$x=2-4y$ Plugging that in, $$2*(2-4y)+5y=7$$ $$4-8y+5y=7$$ $$-3y=3$$ $$y=-1$$ $$x=2-4y=2+4=6$$
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