Answer
$ y=-0.5, x=0 $
Work Step by Step
We solve the system of linear equations using substitution to obtain:
$ 7x-2y=1 $
$ 2y=x-1 = x=2y+1$
$ 7(2y+1)-2y=1 \\
14y+7-2y=1\\
12y=-6\\
y=-0.5\\ $
$x=2y+1 \\
x=2(-0.5)+1 \\
x=-1+1 \\
x=0$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 6 - Systems of Equations and Inequalities - 6-2 Solving Systems Using Substitution - Practice and Problem-Solving Exercises - Page 375: 21
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