Первое действие в скобке
55 29/35 + 32 7/20 - 12 5/28 - 73 31/36 = 2 5/3655 29/35 + 32 7/20 - 12 5/28 - 73 31/36 = 1954/35 + 647/20 - 341/28 - 2659/36 =(1954 × 36 + 647 × 63 - 341 × 45 - 2659 × 35)/1260 = 70344/1260 + 40761/1260 - 15345/1260 - 93065/1260 = 2695/1260 = 77/36 = 2 5/36
2)12/55 × 2 = 24/55
3)24/55 ÷ 4/15 = 24/55 × 15/4 = 18/11 = 1 7/11
4)1 7/11×2 5/36=18/11 × 77/36 = 7/2 = 3 1/2
Ответ : 3 1/2