2.8839869281
Пошаговое объяснение:
1) 2 4/15 - 15/12 = 34/15 - 17/12 = 136/60 - 85/60 = 17/20
2) 17/20 : 3 2/5 = 17/20 : 17/5 = 17/20 * 5/17 = 1/4
3) 6 4/9 : 2 = 58/9 * 1/2 = 29/9 = 3 2/9
4) 1/4 + 29/9 = 9/36 + 116/36 = 3 17/36
ответ: 3 17/36
