Автор - KrulKo
(3 2/3 + 1,75) : (6 7/12 - 2,25) * 0,8 = 1
1) 3 2/3 + 1,75 = 3 2/3 + 1 3/4 = 3 8/12 + 1 9/12 = 4 17/12 = 5 5/12
2) 6 7/12 - 2,25 = 6 7/12 - 2 1/4 = 6 7/12 - 2 3/12 = 4 4/12 = 4 1/3
3) 65/12 : 13/3 = 65/12 * 3/13 = 5/4 = 1 1/4 = 1,25
4) 1,25 * 0,8 = 1
Ответ: 1.