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Solve the System 5x4y2z+1=015x4y+4z4=08y+2z3=0\begin{array} { r } 5 x - 4 y - 2 z + 1 = 0 \\15 x - 4 y + 4 z - 4 = 0 \\8 y + 2 z - 3 = 0\end{array}

Question 320

Multiple Choice

Solve the system.
- 5x4y2z+1=015x4y+4z4=08y+2z3=0\begin{array} { r } 5 x - 4 y - 2 z + 1 = 0 \\15 x - 4 y + 4 z - 4 = 0 \\8 y + 2 z - 3 = 0\end{array}


A) {(15,14,12) }\left\{ \left( - \frac { 1 } { 5 } , \frac { 1 } { 4 } , - \frac { 1 } { 2 } \right) \right\}
B) {(15,14,12) }\left\{ \left( - \frac { 1 } { 5 } , - \frac { 1 } { 4 } , \frac { 1 } { 2 } \right) \right\}
C) \varnothing
D) {(15,14,12) }\left\{ \left( \frac { 1 } { 5 } , \frac { 1 } { 4 } , \frac { 1 } { 2 } \right) \right\}

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