Answer
x = -1
y = 3
Work Step by Step
$\begin{bmatrix}
2 & 6 & |16\\
2 & 3 & |7\\
\end{bmatrix}$ ~ $\begin{bmatrix}
2 & 6 & |16\\
0 & 3 & |9\\
\end{bmatrix}$
Back-Substitution:
3y = 9
y = 3
2x + 6(3) = 16
x = -1
x = -1
y = 3
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 10 - 10.1 - Matrices and Systems of Equations - 10.1 Exercises - Page 711: 60
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