4 целых 1/5 = 21/51 целая 1/5 = 6/5
(21/5) / (6/5) = (21/5) * (5/6) = 105/30 = 3 целых 15/30 = 3 целых 1/2
3 целых 3/4 = 15/44 - 1 = 31 целая 7/18 = 25/18
(15/4) 3 - (25/18) = 45/4 - 25/18 = (45/4) - (25/18) = (459) / (49) - (254) / (184) = 405/36 - 100/72 = 405/36 - 25/18 = 45/4 - 25/18 = (4052) / (362) - (254) / (18*4) = 810/72 - 100/72 = 710/72 = 355/36
Ответ: 2 целых 3/5
4 целых 1/5 = 21/5
1 целая 1/5 = 6/5
(21/5) / (6/5) = (21/5) * (5/6) = 105/30 = 3 целых 15/30 = 3 целых 1/2
3 целых 3/4 = 15/4
4 - 1 = 3
1 целая 7/18 = 25/18
(15/4) 3 - (25/18) = 45/4 - 25/18 = (45/4) - (25/18) = (459) / (49) - (254) / (184) = 405/36 - 100/72 = 405/36 - 25/18 = 45/4 - 25/18 = (4052) / (362) - (254) / (18*4) = 810/72 - 100/72 = 710/72 = 355/36
Ответ: 2 целых 3/5