Linear Algebra: A Modern Introduction

Published by Cengage Learning
ISBN 10: 1285463242
ISBN 13: 978-1-28546-324-7

Chapter 2 - Systems of Linear Equations - 2.1 Introduction to Systems of Linear Equations - Exercises 2.1 - Page 63: 19

Answer

X=7 Y=3

Work Step by Step

Plug the three into the first equation as y because y = 3. Multiple 2 times 3 for 6 then add 6 to the negative 6 and the 1. To end with x=7. See the photo for more detailed work
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