Solve the system of equations by using the inverse of the coefficient matrix.
-$$
\begin{array}{l}
x-y+z=-7 \
x+y+z=1 \
x+y-z=-1
\end{array}
$$
A) $ (-4,1,4) $
B) $ (1,-4,4) $
C) $ (-4,4,1) $
D) No inverse, no solution for system

Question

Quizplus · Accepted Answer

The Answer of Solve the system of equations by using the inverse of the coefficient matrix.
-$$
\begin{array}{l}
x-y+z=-7 \
x+y+z=1 \
x+y-z=-1
\end{array}
$$
A) $ (-4,1,4) $
B) $ (1,-4,4) $
C) $ (-4,4,1) $
D) No inverse, no solution for system

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