4 целых 1/2- 5 целых 1/3:(20x-14 целых 2/3)=1 целая 5/6

.......................

4 1/2 - 5 1/3 : (20х - 14 2/3) = 1 5/65 1/3 : (20х - 14 2/3) = 4 1/2 - 1 5/65 1/3 : (20х - 14 2/3) = 4 3/6 - 1 5/6 = 3 9/6 - 1 5/6 = 2 4/6 = 2 2/320х - 14 2/3 = 5 1/3 : 2 2/3 = 16/3 : 8/3 = 16/3 * 3/8 = 16/8 = 220х = 2 + 14 2/3 = 16 2/3 = 50/3х = 50/3 : 20 = 50/3 * 1/20 = 50/60 = 5/6х = 5/6