Answer
C
Work Step by Step
Matrix A doesn't account for the fact that there are three variables in the system.
Matrix B shifted the variables for the second equation by one column.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 9 - Section 9.2 - Solving Systems of Equations Using Matrices - Exercise Set - Page 648: 29
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