Solve the System $$\begin{array} { l } - 3 x - y + 9 z = 57 \\9 x + 7 y - 7 z = 13 \\- 5 x - 5 y + z = - 37\end{array}$$

question 412

Multiple Choice

Solve the system.
- $$\begin{array} { l } - 3 x - y + 9 z = 57 \\9 x + 7 y - 7 z = 13 \\- 5 x - 5 y + z = - 37\end{array}$$

• A) \(\{ ( - 3,6,6 ) \}\)
• B) \(\{ ( 3,8,6 ) \}\)
• C) \(\{ ( 3,6,8 ) \}\)
• D) \(\varnothing\)

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