2 1/3 + 3 2/3 : 5 1/2  - 0,75 ⋅ 4 = 3 3/5 : 1 1/3 - 2 3/4 : 0,25 =

1. 6/5,5-0,75*4= 6/5,5-3= 6/2,5=2,4   2. 18/5 / 4/3-11/4 / 1/4= 18/5*3/4-11/4*4/1= 27/10-11/1= 27/10-110/10= -83/10= -8,3

2 1/3 + 3 2/3 : 5 1/2 -0,75 *4 = 2 1/3 + 8/3 : 11/2 - 3 =2 1/3 + 8/3 * 2/11 -3 = 2 1/3 +16/33 -3 = 7/3 + 16/33 -3 = 77/33 + 16/33 -3 = 93/33 -3 = 2 27/33 -3 = 2 9/11 -3 = - 2/11   3 3/5 : 1 1/3 - 2 3/4 : 0.25= 18/5 : 4/3 - 11/4 : 1/4 = 18/5 * 3/4 - 11/4 * 4/1= 54/5 - 11/8 = 432/40 - 55/40 = 377/40 = 9 17/40