46. 5 5/12 + 3 7/18 − 2 1/36

5/12 = 15/36, 7/18 = 14/36.

5 5/12 + 3 7/18 − 2 1/36 = 6 + (15 + 14 − 1)/36 = 6 7/9.

Ответ: 6 7/9.