Solved

{5x+2y+z=−112x−3y−z=177x+y+2z=−4\left\{ \begin{array} { l } 5 x + 2 y + z = - 11 \\2 x - 3 y - z = 17 \\7 x + y + 2 z = - 4\end{array} \right.

Question 119

Multiple Choice

{5x+2y+z=−112x−3y−z=177x+y+2z=−4\left\{ \begin{array} { l } 5 x + 2 y + z = - 11 \\2 x - 3 y - z = 17 \\7 x + y + 2 z = - 4\end{array} \right.


A) x=3, y=0, z=-4
B) x=0, y=-6, z=1
C) x=0, y=6, z=-1
D) x=-3, y=0, z=4

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