- 3. Use Gauss-Jordan elimination to solve (where possible) the systems of equations AZ = B with the following augmented matrices, giving the complete general solution, where it exists. If the solution is not unique, write it in the form Z-Z+ Zo, where Z, is a particular solution and Zo is a general vector in the null space. (a) 2+1 3 (b) 22 2+2 3 7 1+2 2 1+1