D.I 4.4-7. Work through the simplex method step by step (in tabu- lar form) to solve the following problem. Z=2x1 x2+ X3, Maximize subject to 3x1 + x2 + X3 6 x1 = x2 + 2x3 1 x1 + x2 x3 <2 and x. 7; 0, x 27,0,37