(3 1/3 + 2,5) : ( 3 1/3 -2,5)

1) 3 1/3 + 2,5 = 10/3 + 5/2 = 20/6 + 15/6=35/6
2) 3 1/3 - 2,5 = 10/3 - 5/2 = 20/6 - 15/6 = 5/6
3) 35/6 : 5/6 = 35/6 * 6/5 = 7
ответ:7