Suggest the set of equations:
2z - 2y + x - 2w + 4 = 0
w + y + 2x + 2z + 5 = 0
w + 2x + 3z = 4
z + x - 5 = 0
a) Show this standard form with the ordered unknown quantities.
b) Find the matrix A of the system and the augmented matrix B.
c) Using the Gaussian elimination method, find the solution of the sytem.