Пошаговое объяснение:
А)
2. 4/7 - 5/7 = 1. 11/7 - 5/7 =
1. 6/7
Б)
13. 2/11 + 4. 5/22 = 13. 4/22 + 4. 5/22 = 17. 9/22
С)
6 - 2/7 = 5. 7/7 - 2/7 = 5. 5/7
Д)
3/39 + 2/13 = 1/13 + 2/13 = 3/13
Пошаговое объяснение:
А)
2. 4/7 - 5/7 = 1. 11/7 - 5/7 =
1. 6/7
Б)
13. 2/11 + 4. 5/22 = 13. 4/22 + 4. 5/22 = 17. 9/22
С)
6 - 2/7 = 5. 7/7 - 2/7 = 5. 5/7
Д)
3/39 + 2/13 = 1/13 + 2/13 = 3/13