Solve the System $\begin{array} { l } - 2 x - y + 4 z = - 3 \\- 2 x + 5 y - 9 z = 14 \\8 x - 8 y + z = - 31\end{array}$

question 144

Multiple Choice

Solve the system.
$\begin{array} { l } - 2 x - y + 4 z = - 3 \\- 2 x + 5 y - 9 z = 14 \\8 x - 8 y + z = - 31\end{array}$

• A) \(\{ ( 1,5,1 ) \}\)
• B) \(\{ ( 1,1,5 ) \}\)
• C) \(\varnothing\)
• D) \(\{ ( - 1,5,2 ) \}\)