Ответ:

Пошаговое объяснение:

1) = 1. 3/4 - 1/2 = 1. 3/4 - 2/4 = 1. 1/4

2) = 5. 2/9 - 1/3 = 5. 2/9 - 3/9 = 4. 11/9 - 3/9 = 4. 8/9

4) = 5. 1/2 - 8. 5/6 =

5. 3/6 - 8. 5/6 = -3. 2/6 =

-3. 1/3

5) = 4. 1/3 - 7. 5/9 =

4. 3/9 - 7. 5/9 = -3. 2/9

7) = 2. 1/3 - 4. 5/6 =

2. 2/6 - 4. 5/6 = -2. 3/6 =

-2. 1/2

8) = 1. 1/12 - 5. 1/6 =

1. 1/12 - 5. 2/12 = -4. 1/12