-3
Пошаговое объяснение:
1) 3. 8/9 * 3/7 = 35/9 * 3/7 = 5/3 * 1/1 = 5/3 =
1. 2/3
2) 7 - 1. 2/3 = 6. 3/3
- 1. 2/3 = 5. 1/3
3) 5. 1/3 : 3. 1/9 =
16/3 : 28/9 = 16/3 * 9/28 = 4/1 * 3/7 = 12/7 = 1. 5/7
4) 1. 5/7 - 4. 5/7 = -3
-3
Пошаговое объяснение:
1) 3. 8/9 * 3/7 = 35/9 * 3/7 = 5/3 * 1/1 = 5/3 =
1. 2/3
2) 7 - 1. 2/3 = 6. 3/3
- 1. 2/3 = 5. 1/3
3) 5. 1/3 : 3. 1/9 =
16/3 : 28/9 = 16/3 * 9/28 = 4/1 * 3/7 = 12/7 = 1. 5/7
4) 1. 5/7 - 4. 5/7 = -3