Выполните действие.

3. ((11 2/3 - 8 3/4) + (3 1/3 + 2 5/6) - 4) - 7/12 = ((35/3 - 35/4) + (10/3 + 17/6) - 12/3) - 7/12 = ((140/12 - 105/12) + (40/12 + 34/12) - 48/12) - 7/12 = (35/12 + 74/12 - 48/12) - 7/12 = 54/12 - 7/12 = 47/12 = 3 11/12.