Пошаговое объяснение:
1) 2,56 - 0,125 = 2,435
2) 2,435 * 2. 2/3 =
2. 435/1000 * 2. 2/3 =
2. 87/200 * 2. 2/3 =
487/200 * 8/3 = 487/25 * 1/3 = 487/75 = 6. 37/75
3) 6. 37/75 - 1/15 =
6. 37/75 - 5/75 = 6. 32/75
4) 6. 32/75 : 16 =
482/75 * 1/16 = 482/1200 = 241/600
5) 5. 3/4 + 2,25 =
5. 3/4 + 2. 25/100 =
5. 3/4 + 2. 1/4 = 7. 4/4 = 8
6) 241/600 * 8 =241/75 * 1 = 241/75 = 3. 16/75
7) 0,198 * 9. 1/11 =
198/1000 * 100/11 =
18/10 * 1/1 = 18/10 = 1. 8/10 =
1. 4/5
8) 1. 4/5 - 3. 16/75 =
1. 60/75 - 3. 16/75 =
1. 60/75 - 2. 91/75 =
-1. 31/75
ответ: -1. 31/75
если 3 парты-по два