14 5/12 - 7 7/12 =

14 5/12 - 7 7/12 = (14 - 7) + (5/12 - 7/12) = 7 - 2/12 = 6 + 12/12 - 2/12 = 6 10/12 = 6 5/6

Ответ: 6 5/6