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: 24


$x=-\frac{7}{2}$ and $y=4$

Work Step by Step

$2x+5y=13$ $/\times(-3)$ to get rid of the $x$ $6x+2y=-13$ _________________ $-6x-15y=-39$ $6x+2y=-13$ _________________ $-13y=-52$ $y=\frac{-52}{-13}$ $y=4$ when $y=4$... $6x+2(4)=-13$ $6x+8=-13$ $6x=-21$ $x=-\frac{21}{6}$ $x=-\frac{7}{2}$
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