Solve the System of Linear Equations $$\left\{ \begin{aligned}x + y + z + w & = 3 \\- x - y + z + w & = - 5 \\x + 3 z + w & = - 6 \\- 4 x - 4 y - 2 z - w & = - 13\end{aligned} \right.$$

question 68

Multiple Choice

Solve the system of linear equations.
$$\left\{ \begin{aligned}x + y + z + w & = 3 \\- x - y + z + w & = - 5 \\x + 3 z + w & = - 6 \\- 4 x - 4 y - 2 z - w & = - 13\end{aligned} \right.$$

• A) \(( - 1,5,1 , - 2 )\)
• B) \(( - 1 , - 2,5,1 )\)
• C) \(( 1,5 , - 2 , - 1 )\)
• D) \(( - 1,5 , - 2,1 )\)
• E) inconsistent

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