Solve the System Using Gaussian Elimination or Gauss-Jordan Elimination $\begin{array} { l } 3 x + 2 y + 7 z = 38 \\9 x + 6 y + 21 z = 114 \\0.6 x + 0.4 y + 1.4 z = 7.6\end{array}$

question 25

Multiple Choice

Solve the system using Gaussian elimination or Gauss-Jordan elimination.
- $\begin{array} { l } 3 x + 2 y + 7 z = 38 \\9 x + 6 y + 21 z = 114 \\0.6 x + 0.4 y + 1.4 z = 7.6\end{array}$

• A){ }
• B) { ( x , y , z )| 3 x +2 y +7 z = 38 }
• C) \(\{ ( -1,-4,7 ) \}\)
• D) \(\{ ( 1,4,-7) \}\)

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