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Solve for the X -Coordinate of the Solution of the Following

Question 161

Multiple Choice

Solve for the x -coordinate of the solution of the following system. {x+2y−z=0x−4y+z=−8x+4y−2z=5\left\{ \begin{array} { l } x + 2 y - z = 0 \\x - 4 y + z = - 8 \\x + 4 y - 2 z = 5\end{array} \right.


A) x=-5
B) x=5
C) x=4
D) x=-4

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