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Solve the System of Equations {x−y+z=8x+y+z=6x+y−z=−12\left\{ \begin{array} { l } x - y + z = 8 \\x + y + z = 6 \\x + y - z = - 12\end{array} \right.

Question 115

Multiple Choice

Solve the system of equations.
- {x−y+z=8x+y+z=6x+y−z=−12\left\{ \begin{array} { l } x - y + z = 8 \\x + y + z = 6 \\x + y - z = - 12\end{array} \right.


A) x=2,y=−1,z=−9x = 2 , y = - 1 , z = - 9
B) x=−2,y=−1,z=−9x = - 2 , y = - 1 , z = - 9
C) x=−2,y=−1,z=9x = - 2 , y = - 1 , z = 9
D) x=2,y=−1,z=9x = 2 , y = - 1 , z = 9

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