Solve the system of equations by using the inverse of the coefficient matrix.
-$$
\begin{array}{l}
9 x-2 y+5 z=78 \
2 x+3 y-9 z=-50 \
3 x-8 y+6 z=49
\end{array}
$$
A) $ (6,-1,7) $
B) $ (1,7,1) $
C) $ (5,-1,-7) $
D) $ (5,1,7) $

Question

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The Answer of Solve the system of equations by using the inverse of the coefficient matrix.
-$$
\begin{array}{l}
9 x-2 y+5 z=78 \
2 x+3 y-9 z=-50 \
3 x-8 y+6 z=49
\end{array}
$$
A) $ (6,-1,7) $
B) $ (1,7,1) $
C) $ (5,-1,-7) $
D) $ (5,1,7) $

Solve the System of Equations by Using the Inverse of the Coefficient