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: 12


$x=76$ and $y=-45$

Work Step by Step

$2x+3y=17$ $/\times(-5)$ to get rid of the $x$ $5x+8y=20$ $/\times(2)$ to get rid of the $x$ _________________ $-10x-15y=-85$ $10x+16y=40$ _________________ $y=-45$ when $y=-45$... $2x+3(-45)=17$ $2x-135=17$ $2x=152$ $x=\frac{152}{2}$ $x=76$
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