Elementary Linear Algebra 7th Edition

Published by Cengage Learning
ISBN 10: 1-13311-087-8
ISBN 13: 978-1-13311-087-3

Chapter 1 - Systems of Linear Equations - 1.1 Introduction to Systems of Linear Equations - 1.1 Exercises - Page 10: 8



Work Step by Step

$3x-\frac{1}{2}y=9$ $(3x-\frac{1}{2}y)+\frac{1}{2}y=(9)+\frac{1}{2}y$ $3x=\frac{1}{2}y+9$ $(3x)/3=(\frac{1}{2}y+9)/3$ $x=\frac{1}{6}y+3$
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