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Use Back-Substitution to Solve the System of Linear Equations {2xy+5z=24y+2z=9z=7\left\{ \begin{array} { c l } 2 x - y + 5 z & = 24 \\y + 2 z & = 9 \\z & = 7\end{array} \right.

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Use back-substitution to solve the system of linear equations. {2xy+5z=24y+2z=9z=7\left\{ \begin{array} { c l } 2 x - y + 5 z & = 24 \\y + 2 z & = 9 \\z & = 7\end{array} \right.


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