Answer
See below.
Work Step by Step
Plugging in the values into the equations:
$2+(-3)-2(1)=2-3-2=-3$
$3(2)-(-3)-7(1)=6+9-7=2$
$2+(-3)+1=2-3+1=0$
$2(2)+2(-3)-4(1)=4-6-4=-6$
All of the equations are satisfied, thus it is in fact a good solution.
Differential Equations and Linear Algebra (4th Edition)
by Goode, Stephen W.; Annin, Scott A.
Published by
Pearson
ISBN 10:
0-32196-467-5
ISBN 13:
978-0-32196-467-0
Chapter 2 - Matrices and Systems of Linear Equations - 2.3 Terminology for Systems of Linear Equations - Problems - Page 144: 2
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