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 - Skill Practice - Page 200: 31


$x=3$ and $y=35$

Work Step by Step

$(-2\times9)+(2\times x)+(1\times(-1))=-13$ $-18+2x-1=-13$ $2x=18-13+1$ $2x=6$ $x=3$ $36+2-3=y$ $y=35$
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