Use Gaussian Elimination to Solve the Linear System by Finding $$\begin{array} { l } 2 x + 5 y + z = - 26 \\3 x - 3 y - z = 21 \\3 x + y + 3 z = - 11\end{array}$$

question 91

Multiple Choice

Use Gaussian elimination to solve the linear system by finding an equivalent system in triangular form.
- $$\begin{array} { l } 2 x + 5 y + z = - 26 \\3 x - 3 y - z = 21 \\3 x + y + 3 z = - 11\end{array}$$

• A)(1, -3, -5)
• B)no solution
• C)(1, -5, -3)
• D)(-3, -5, 1)

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