(12.2/3-63.1/3:5.2/11)*(2,25+2.2\5:1.1/15)*6:15 __________________________________+13/19 3

Преобразуем:
12 2/3 = (12 * 3 + 2)/3 = 38/3.
63 1/3 = (63 * 3 + 1)/3 = 190/3.
5 2/11 = (5 * 11 + 2)/11 = 57/11.
2 2/5 = (2 * 5 + 2)/5 = 12/5.
1 1/15 = (1 * 15 + 1)/15 = 16/15.
2,25 = 2 25/100 = (2 * 100 + 25)/100 = 225/100 сократим на 25 = 9/4.
Вычислим:
1. 190/3 / 57/11 = (190 * 11)/(3 * 57) = 2090/171 сократим на 19 = 110/9.
2.38/3 - 110/9 = (114 - 110)/9 = 4/9.
3. 12/5 / 16/15 = (12 * 15)/(5 * 16) = 180/80 сократим на 20 = 9/4.
4. 9/4 + 9/4 = 18/4 на 2 = 9/2.
5. 4/9 * 9/2 = (4 * 9)/(9 * 2) = 36/18 = 2.
6. 2 * 6 = 12.
7. 12 / 15 = 0,8.