(3/4 + 1/6) = (9/12 + 2/12) = 11/12(5/6 - 1/2) = (5/6 - 6/12) = (10/12 - 6/12) = 4/12 = 1/3
(11/12) / 3 + (1/3) / 9 = (11/12) / 3 + (1/3) (1/9) = (11/12) / 3 + 1/27 = 11/36 + 1/27 = (113+14) / (363) = 33/108 + 4/108 = 37/108
Ответ: 37/108
(3/4 + 1/6) = (9/12 + 2/12) = 11/12
(5/6 - 1/2) = (5/6 - 6/12) = (10/12 - 6/12) = 4/12 = 1/3
(11/12) / 3 + (1/3) / 9 = (11/12) / 3 + (1/3) (1/9) = (11/12) / 3 + 1/27 = 11/36 + 1/27 = (113+14) / (363) = 33/108 + 4/108 = 37/108
Ответ: 37/108