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Determine Whether the Ordered Pair Is a Solution of the System

Question 30

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Determine whether the ordered pair is a solution of the system of linear equations.
- (4,5);{x+y=1xy=9\begin{array} { l } ( - 4 , - 5 ) ; \\\left\{ \begin{array} { l } x + y = - 1 \\x - y = 9\end{array} \right.\end{array}

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