Solve the System of Equations $$\left\{ \begin{array} { r } x + 4 y - z = 3 \\x + 5 y - 2 z = 5 \\3 x + 12 y - 3 z = 9\end{array} \right.$$

question 63

Multiple Choice

Solve the system of equations.
- $$\left\{ \begin{array} { r } x + 4 y - z = 3 \\x + 5 y - 2 z = 5 \\3 x + 12 y - 3 z = 9\end{array} \right.$$

• A) \(x = 3 z + 5\)
• \(y = z - 2\)
• \(z =\) any real number
• B) \(x = - 3 z - 5\)
• \(y = z + 2\)
• \(z =\) any real number
• C) \(x = z - 2\)
• \(y = - 3 z - 5\)
• \(z =\) any real number
• D) inconsistent (no solution)

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