Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 3 Linear Systems and Matrices - 3.4 Solve Systems of Linear Equations in Three Variables - 3.4 Exercises - Mixed Review - Page 185: 60


$x=-5$ and $y=6$

Work Step by Step

$3x+2y=-3$ $/\times(3)$ to get rid of the $y$ $4x-3y=-38$ $/\times(2)$ to get rid of the $y$ _________________ $9x+6y=-9$ $8x-6y=-76$ _________________ $17x=-85$ $x=-\frac{85}{17}$ $x=-5$ when $x=-5$... $3(-5)+2y=-3$ $-15+2y=-3$ $2y=12$ $y=\frac{12}{2}$ $y=6$
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