Pivot once as indicated in the given simplex X1 X2 X3 S1 S tableau. Read the solution from the result. 1 4 4 0 OO N 56 2 2 O 18 -1 -5 -2 - O O O . . . Pivot around the highlighted entry. X 1 X2 X3 S1 $2 Z 0 O O N 0 (Simplify your answers.) Read the solution from the result. X1 = , X2 = , X3 = 7, 52 =[ Z = (Simplify your answers.)Find the solutions that can be read from the simplex tableau. X1 X2 X3 S1 S2 Z 3 0 8 -OO oo - ACON o - - 3 5 21 . . .. x2 = ,x3 = . Sy = ,$2= Z= (Simplify your answers.)