Can someone please explain to me ASAP??!!

Describe and compare the solution sets of x1 + 2x2 4x3 = D and x1 + 2x2 4x3 = 1. E X, Describe the solution set, x = X2 ,of x1 + 2x2 - 4x3 =0 in parametric vector form. Select the correct choice below and ll in the answer boxes within your *3 choice. (Type an integer or fraction for each matrix element.) x: x=x3 -2 4 V' xx2 1 \"'3 0 0 1 x= +x2 x1 Describe the solution set. x= X2 , of x1 + 2x2 - 4x3 = - 1 in parametric vector form. Select the correct choice below and fill in the answer boxes within *3 your choice (Type an integer or fraction for each matrix element.) C} A. x= C} B. x= +"3 C} C. F \"'2 \"a {I} D. x = X2 + *3