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Solve the System x−y+z=1x+y+z=3x+y−z=−3\begin{array} { l } x - y + z = 1 \\x + y + z = 3 \\x + y - z = - 3\end{array}

Question 70

Multiple Choice

Solve the system.
- x−y+z=1x+y+z=3x+y−z=−3\begin{array} { l } x - y + z = 1 \\x + y + z = 3 \\x + y - z = - 3\end{array}


A) {(3,−1,1) }\{ ( 3 , - 1,1 ) \}
B) ∅\varnothing
C) {(−1,1,3) }\{ ( - 1,1,3 ) \}
D) {(−1,3,1) }\{ ( - 1,3,1 ) \}

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