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Solve the System by Using the Inverse of the Coefficient −3x−3y−z=−46x−9y+5z=−46−4x+y+z=−12\begin{array} { r } - 3 x - 3 y - z = - 46 \\x - 9 y + 5 z = - 46 \\- 4 x + y + z = - 12\end{array}

Question 114

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- −3x−3y−z=−46x−9y+5z=−46−4x+y+z=−12\begin{array} { r } - 3 x - 3 y - z = - 46 \\x - 9 y + 5 z = - 46 \\- 4 x + y + z = - 12\end{array}


A) {(−6,8,12) }\{ ( - 6,8,12 ) \}
B) ∅\varnothing
C) {(6,8,4) }\{ ( 6,8,4 ) \}
D) {(6,4,8) }\{ ( 6,4,8 ) \}

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