Use an Inverse Matrix to Find the Solution to the System

question 185

Multiple Choice

Use an inverse matrix to find the solution to the system.
- $$\left\{ \begin{aligned}4 x + 3 z & = 43 \\8 x + 6 y + 8 z & = 102 \\- 4 x - 6 y & = - 34\end{aligned} \right.$$

• A) \(x = 7 , y = 1 , z = 5\)
• B) \(x = 8 , y = - 1 , z = 5\)
• C) \(x = 1 , y = 5 , z = 1\)
• D) \(x = 7 , y = - 1 , z = - 5\)

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