Скороти дріб:
1) 25/40
2) 60/7
3) 154/182
4) 105/399​

25/40 =5/8

60/7 =8. 4/7

154/182=77/61=1. 16/61

105/399=35/133

1) 5/8 2) 4/7 3) 11/13 4) 5 / 19

Объяснение:

25/40 = 5 * 5 / 8 * 5 = 5/860/7 = 56/ 7 + 4 / 7 = 8 + 4/7154/182 = 14 * 11 / 14 * 13 = 11/13105/399​ = 21 * 5 / 21 * 19 = 5 / 19