Use an Inverse Matrix to Find the Solution to the System

question 150

Multiple Choice

Use an inverse matrix to find the solution to the system.
- $$\left\{ \begin{array} { c } - 5 x - y - 7 z = - 35 \\- 6 x + 6 z = - 12 \\5 y + z = 7\end{array} \right.$$

• A) \(x = - 4 , y = 8 , z = 1\)
• B) \(x = 4 , y = 1 , z = 2\)
• C) \(x = 4 , y = 2 , z = 1\)
• D) \(x = - 4 , y = 1 , z = 8\)

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