| - 5/18 | • | - 3/10 | + 7/12
5/18 • 3/10 + 7/12
15/180 + 7/12
сокращаем 15/180 на 15
1/12 + 7/12 = 8/12 = 2/3
| - 25/26 | • | - 26/75 | • | - 1 |
25/26 • 26/75 • 1
сокращаем 25/26 и 26/75
1/1 • 1/3 • 1 = 1/3
2/3 > 1/3
