Solve the System of Linear Equations Using Matrices $$\left\{ \begin{array} { r r } - 5 x - 8 y + 8 z = & 9 \\7 x + 8 y + 4 z = & - 3 \\- 25 x - 40 y + 40 z = & 6\end{array} \right.$$

question 25

Multiple Choice

Solve the system of linear equations using matrices.
- $$\left\{ \begin{array} { r r } - 5 x - 8 y + 8 z = & 9 \\7 x + 8 y + 4 z = & - 3 \\- 25 x - 40 y + 40 z = & 6\end{array} \right.$$

• A) \(( 5,5 , - 1 )\)
• B) \(( 9 , - 3,6 )\)
• C) \(\{ ( x , y , z ) \mid - 5 x - 8 y + 8 z = 40 \}\)
• D) \(\varnothing\)

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