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Determine If the Given Ordered Triple Is a Solution of the System

question 138

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Determine if the given ordered triple is a solution of the system.
- (5,−2,−5) 4x+5y+z=−252x−3y−z=−95x+y+4z=−7\begin{array} { l } ( 5 , - 2 , - 5 ) \\4 x + 5 y + z = - 25 \\2 x - 3 y - z = - 9 \\5 x + y + 4 z = - 7\end{array}

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