8. The following system of equations has a unique solution. Solve this system using the method of Gauss-Jordan elimination with matrix. (10%)
\( x_1 - x_2 + 3x_3 = 3 \\ 2x_1 - x_2 + 2x_3 = 2 \\ 3x_1 + x_2 - 2x_3 = 3 \)