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Find the Y -Coordinate of the Solution of the Following {x+7y3z=92xy+z=6x+yz=3\left\{ \begin{array} { l } x + 7 y - 3 z = - 9 \\2 x - y + z = 6 \\- x + y - z = - 3\end{array} \right.

Question 143

Multiple Choice

Find the y -coordinate of the solution of the following system. {x+7y3z=92xy+z=6x+yz=3\left\{ \begin{array} { l } x + 7 y - 3 z = - 9 \\2 x - y + z = 6 \\- x + y - z = - 3\end{array} \right.


A) y=-3
B) y=-9
C) y=8
D) y=4

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