Solve the System of Equations $$\left\{ \begin{array} { c } x + y + z = 7 \\x - y + 2 z = 7 \\5 x + y + z = 11\end{array} \right.$$

question 163

Multiple Choice

Solve the system of equations.
- $$\left\{ \begin{array} { c } x + y + z = 7 \\x - y + 2 z = 7 \\5 x + y + z = 11\end{array} \right.$$

• A) \(x = 1 , y = 4 , z = 2\)
• B) \(x = 4 , y = 2 , z = 1\)
• C) \(x = 1 , y = 2 , z = 4\)
• D) \(x = 4 , y = 1 , z = 2\)

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