Пошаговое объяснение:
1) 4/15 + 3/4 = 16/60 + 45/60 = 61/60 = 1. 1/60
2) 5/6 - 9/14 = 35/42 - 27/42 = 8/42 = 4/21
3) 4. 4/7 + 6. 1/4 =
4. 16/28 + 6. 7/28 =
10. 23/28
4) 5. 7/8 - 3. 5/6 =
5. 21/24 - 3. 20/24 =
2. 1/24
Пошаговое объяснение:
1) 4/15 + 3/4 = 16/60 + 45/60 = 61/60 = 1. 1/60
2) 5/6 - 9/14 = 35/42 - 27/42 = 8/42 = 4/21
3) 4. 4/7 + 6. 1/4 =
4. 16/28 + 6. 7/28 =
10. 23/28
4) 5. 7/8 - 3. 5/6 =
5. 21/24 - 3. 20/24 =
2. 1/24