Answer
$$x=5,\:y=7$$
Work Step by Step
We solve the system of equations using substitution:
$$ x+2x-3=12\\ x=5 \\ y=2\cdot \:5-3\\ y=7$$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 8 - Systems of Linear Equations and Problem Solving - Mid-Chapter Review - Mixed Review - Page 540: 6
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