Answer
Elimination
Work Step by Step
We see $-2x$ in the first equation and a $2x$ in the second equation. Since these can easily be eliminated by adding the two equations together, we know that the elimination method will be the most effective.
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 - Review Exercises: Chapter 8 - Page 570: 2
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