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

question 21

Multiple Choice

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

• 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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