Solve Systems of Linear Equations in Three Variables
- $$\begin{array} { l } 2 x + 2 y + z = - 10 \\4 x - 2 y - z = - 20 \\2 x + y + 2 z = - 13\end{array}$$

question 81

Multiple Choice

Solve Systems of Linear Equations in Three Variables
- $$\begin{array} { l } 2 x + 2 y + z = - 10 \\4 x - 2 y - z = - 20 \\2 x + y + 2 z = - 13\end{array}$$

• A) \(\{ ( - 5,1 , - 2 ) \}\)
• B) \(\{ ( - 5 , - 2,1 ) \}\)
• C) \(\{ ( - 2,1 , - 5 ) \}\)
• D) \(\{ ( 1 , - 5 , - 2 ) \}\)

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