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: 21


$x=-8$ and $y=6$

Work Step by Step

$2x+5y=14$ $/\times(-3)$ to get rid of the $x$ $3x-2y=-36$ $/\times(2)$ to get rid of the $x$ _________________ $-6x-15y=-42$ $6x-4y=-72$ _________________ $-19y=-114$ $y=\frac{114}{19}$ $y=6$ when $y=6$... $2x+5(6)=14$ $2x+30=14$ $2x=-16$ $x=-8$
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