Use Gaussian Elimination with Back Substitution or Gauss-Jordan Elimination to solve the following linear system. If no solution exists, say so. If more than one solution exists, give the solution set in parametrized form. Indicate all row operations you perform and show all work. X1 + X2 - 23 + 24 = 0,
2x1 - x2 + x3 = 3,
X2 – X3 + 24 = -1,
3x1 - 23 + 2x4 = 0.