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: 15


$x=7$ $y=\frac{1}{2}$

Work Step by Step

$2x+6y=17$ $2x-10y=9$ $/\times(-1)$ _________________ $2x+6y=17$ $-2x+10y=-9$ _________________ $16y=8$ $y=\frac{1}{2}$ when $y=\frac{1}{2}$... $2x+6(\frac{1}{2})=17$ $2x+3=17$ $2x=14$ $x=7$
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