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Solve the System of Equations x+y=7−5x−3y+5z=−30x−z=3\begin{aligned} x + y & = 7 \\ - 5 x - 3 y + 5 z & = - 30 \\ x - z & = 3 \end{aligned}

Question 165

Multiple Choice

Solve the system of equations.
- x+y=7−5x−3y+5z=−30x−z=3\begin{aligned} x + y & = 7 \\ - 5 x - 3 y + 5 z & = - 30 \\ x - z & = 3 \end{aligned}


A) {(2,5,−1) }\{ ( 2 ,5 , - 1) \}
B) {(2,−1,5) }\{ ( 2 , - 1,5 ) \}
C) {(−1,5,2) }\{ ( - 1,5,2 ) \}
D) {(−1,2,5) }\{ ( - 1,2,5 ) \}

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