Solve the System $$\left\{ \begin{aligned}x + y + z & = - 5 \\x - y + 4 z & = - 18 \\2 x + 2 y + 2 z & = - 4\end{aligned} \right.$$

question 80

Multiple Choice

Solve the system.
- $$\left\{ \begin{aligned}x + y + z & = - 5 \\x - y + 4 z & = - 18 \\2 x + 2 y + 2 z & = - 4\end{aligned} \right.$$

• A) \(( 1 , - 1 , - 5 )\)
• B) \(( - 5,1 , - 1 )\)
• C) \(( - 5 , - 1,1 )\)
• D) \(\varnothing\)

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