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

question 50

Multiple Choice

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

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