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Solve the System,if Possible {8x+5y+6z=224x9y+2z=787x7y10z=57\left\{ \begin{array} { l } 8 x + 5 y + 6 z = 22 \\4 x - 9 y + 2 z = 78 \\7 x - 7 y - 10 z = 57\end{array} \right.

Question 21

Multiple Choice

Solve the system,if possible.? {8x+5y+6z=224x9y+2z=787x7y10z=57\left\{ \begin{array} { l } 8 x + 5 y + 6 z = 22 \\4 x - 9 y + 2 z = 78 \\7 x - 7 y - 10 z = 57\end{array} \right. ?


A) x = -1,y = 12,z = -2
B) x = 5,y = -6,z = 2
C) x = -5,y = 6,z = -2
D) x = -5,y = 5,z = -2
E) no solution;inconsistent system

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