Solve Systems of Linear Equations in Three Variables
- $$\begin{array} { c } x + y + z = - 7 \\x - y + 3 z = - 13 \\2 x + y + z = - 9\end{array}$$

question 246

Multiple Choice

Solve Systems of Linear Equations in Three Variables
- $$\begin{array} { c } x + y + z = - 7 \\x - y + 3 z = - 13 \\2 x + y + z = - 9\end{array}$$

• A) \(\{ ( - 2 , - 1 , - 4 ) \}\)
• B) \(\{ ( - 1 , - 2 , - 4 ) \}\)
• C) \(\{ ( - 4 , - 1 , - 2 ) \}\)
• D) \(\{ ( - 4 , - 2 , - 1 ) \}\)

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