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Solve the System Using Gaussian Elimination or Gauss-Jordan Elimination 3x7y+7z=712x+7y3z=223x9y+9z=87\begin{array} { l } - 3 x - 7 y + 7 z = 71 \\- 2 x + 7 y - 3 z = - 22 \\- 3 x - 9 y + 9 z = 87\end{array}

question 57

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Solve the system using Gaussian elimination or Gauss-Jordan elimination.
- 3x7y+7z=712x+7y3z=223x9y+9z=87\begin{array} { l } - 3 x - 7 y + 7 z = 71 \\- 2 x + 7 y - 3 z = - 22 \\- 3 x - 9 y + 9 z = 87\end{array}


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