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: 61


$x=5$ and $y=1$

Work Step by Step

$4x-3y=17$ $2x+5y=15$ $/\times(-2)$ __________________ $4x-3y=17$ $-4x-10y=-30$ __________________ $-13y=-13$ $y=\frac{13}{13}$ $y=1$ For $y=1$... $4x-3(1)=17$ $4x=20$ $x=\frac{20}{4}$ $x=5$
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