Algebra 2 (1st Edition)

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

Chapter 3 Linear Systems and Matrices - 3.6 Multiplying Matrices - 3.6 Exercises - Mixed Review - Page 202: 63


$x=6$ and $y=-\frac{1}{2}$

Work Step by Step

$x+4y=4$ $3x-2y=19$ $/\times(2)$ __________________ $x+4y=4$ $6x-4y=38$ __________________ $7x=42$ $x=\frac{42}{7}$ $x=6$ For $x=6$... $6(1)+4y=4$ $4y=-2$ $y=\frac{-2}{4}$ $y=-\frac{1}{2}$
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