Use Matrix Inversion to Solve the System of Linear Equations $\begin{aligned}x + 2 y + z & = 8 \\x + y + z & = 7 \\3 x + y + z & = 25\end{aligned}$

question 39

Multiple Choice

Use matrix inversion to solve the system of linear equations. $\begin{aligned}x + 2 y + z & = 8 \\x + y + z & = 7 \\3 x + y + z & = 25\end{aligned}$

• A) \(x = 7\) , \(y = 4\) , \(z = - 1\)
• B) \(x = 12\) , \(y = 3\) , \(z = - 5\)
• C) \(x = 11\) , \(y = - 1\) , \(z = 0\)
• D) \(x = 9\) , \(y = 1\) , \(z = - 3\)
• E) The system is inconsistent.

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