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Solve Systems of Linear Equations in Three Variables
- 2x+2y+z=104x2yz=202x+y+2z=13\begin{array} { l } 2 x + 2 y + z = - 10 \\4 x - 2 y - z = - 20 \\2 x + y + 2 z = - 13\end{array}

Question 81

Multiple Choice

Solve Systems of Linear Equations in Three Variables
- 2x+2y+z=104x2yz=202x+y+2z=13\begin{array} { l } 2 x + 2 y + z = - 10 \\4 x - 2 y - z = - 20 \\2 x + y + 2 z = - 13\end{array}


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

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