Ответ:

1/2

Пошаговое объяснение:

1) -2. 2/11 * 4,125 = -2. 2/11 * 4. 125/1000 = -2. 2/11 * 4. 1/8 = -24/11 * 33/8 = -3/1 * 3/1 = -9/1 = -9

2) 1,6 * 3. 3/4 = 1. 6/10 * 3. 3/4 = 16/10 * 15/4 = 4/2 * 3/1 = 12/2 = 6

3) -9 + 6 = -3

4) 5. 5/6 * 2. 4/7 = 35/6 * 18/7 = 5/1 * 3/1 = 15/1 = 15

5) 9 - 15 = -6

6) -3 : (-6) = 3/6 = 1/2 или 0,5