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: 25


$x=7$ and $y=3$

Work Step by Step

$4x-5y=13$ $/\times(-3)$ to get rid of the $x$ $6x+2y=48$ $/\times(2)$ to get rid of the $x$ _________________ $-12x+15y=-39$ $12x+4y=96$ _________________ $19y=57$ $y=\frac{57}{19}$ $y=3$ when $y=3$... $6x+2(3)=48$ $6x+6=48$ $6x=42$ $x=\frac{42}{6}$ $x=7$
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