All I was stressing about is part d and e of this question. I've spent an hour and a half trying to figure them out. I have a, b, and c. Not d and e

Section 1.2 1. Convert the following system of equations to an augmented matrix and perform row reduction to bring it to reduced echelon form. In your reduced echelon matrix, circle all pivot positions. Then determine the solution set for the system. If there are infinitely many solutions, then label which variables are free and solve for the others. Then give three examples of solutions. (a) 2x1 + 5x2 = 9 301 + 12 - 13 = 8 311 - 12 = 5 (d) 2x1 + 413 = 6 5r1 - 202 = -13 C1 + 02 -513 = 2 (b) -C1 + 412 = 8 (e) 2x1 + 6:2 + 3x3 - 204 = 0 T1 - 202 = -5 T1 + 3x2 + 2x3 + 14 = 0 1 + 202 + 4rs = 5 (c) -201 + 12 -303 = -1 r2 + 13 = 3