Solve the System of Equations $$\begin{aligned}x + y + z & = 1 \\x - y + 5 z & = - 21 \\2 x + 2 y + 2 z & = 3\end{aligned}$$

question 145

Multiple Choice

Solve the system of equations.
- $$\begin{aligned}x + y + z & = 1 \\x - y + 5 z & = - 21 \\2 x + 2 y + 2 z & = 3\end{aligned}$$

• A) \(\{ ( 2,3 , - 4 ) \}\)
• B) \(\{ ( - 4,2,3 ) \}\)
• C) \(\{ ( - 4,3,2 ) \}\)
• D) \(\varnothing\)

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