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

question 57

Multiple Choice

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

• A) \(\{ ( - 5 , - 2,6 ) \}\)
• B){ }
• C) \(\{ ( 5,2,6 ) \}\)
• D) \(\{ ( - 5,2,6 ) \}\)

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