Solved

$\left\{ \begin{array} { l } x + y + z = 6 \\x - z = - 2 \\y + 3 z = 11\end{array} \right.$

Question 21

Multiple Choice

A) x=-1, y=2, z=-3
B) x=1, y=2, z=3
C) x=3, y=-2, z=5
D) x=0, y=4, z=2

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