Пошаговое объяснение:
1)
4. 2/9 + 5. 2/3 - 1. 4/9 =
4. 2/9 + 5. 6/9 - 1. 4/9 =
9. 8/9 - 1. 4/9 = 8. 4/9
3)
5. 3/5 - 2. 6/11 + 3. 3/5 =
5. 33/55 - 2. 30/55 +
3. 33/55 =
3. 3/55 + 3. 33/55 = 6. 36/55
2)
9 - 4. 2/17 + 2. 3/17 =
8. 17/17 - 4. 2/17 + 2. 3/17 =
4. 15/17 + 2. 3/17 = 6. 18/17 =
7. 1/17
Пошаговое объяснение:
1)
4. 2/9 + 5. 2/3 - 1. 4/9 =
4. 2/9 + 5. 6/9 - 1. 4/9 =
9. 8/9 - 1. 4/9 = 8. 4/9
3)
5. 3/5 - 2. 6/11 + 3. 3/5 =
5. 33/55 - 2. 30/55 +
3. 33/55 =
3. 3/55 + 3. 33/55 = 6. 36/55
2)
9 - 4. 2/17 + 2. 3/17 =
8. 17/17 - 4. 2/17 + 2. 3/17 =
4. 15/17 + 2. 3/17 = 6. 18/17 =
7. 1/17