(8 целых 7/12 - 2 целых 17/36) * 2,7 - 4 целых 1/3 : 0,65=9 целых 65/78
(103/12 - 89/36) * 27/10 - 13/3 : 65/100
1) 103/12 - 89/36 = 309 - 89/36 = 220/36 = 55/9
2) 55/9 * 27/10 = 1485/90 = 165/10
3) 13/3 : 65/100 = 13/3 * 100/65 = 1300/195
4) 165/10 - 1300/195 = 32175 - 13000/1950 = 19175/1950 = 767/78 = 9 целых 65/78