Solve
- $$\begin{array} { l } x + y + z = 7 \\x - y + 2 z = 7 \\5 x + y + z = 11\end{array}$$

question 42

Multiple Choice

Solve.
- $$\begin{array} { l } x + y + z = 7 \\x - y + 2 z = 7 \\5 x + y + z = 11\end{array}$$

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

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