Find the set S of all solutions x of the following inhomogenous linear systems Ax = b, where A and b are defined as follows. Write the solution space S in parametric form. (b) A = 1 0 1 6 2 2 -5,b= 1 -1 - H 5 -2 3 4 3 2 2 5 0 1 2 2 6 23 A = ,b= 3 2 1 1 -3 -2 -1 0 1 1 1 16