Такой вопрос. (4 5/12+1 3/4):(6 2/15-1 1/5)

(4(5/12) + 1(3/4)) / (6(2/15) – 1(1/5)).

4(5/12) + 1(3/4) = 53/12 + 7/4 = 53/12 + 21/12 = 74/12 = 37/6.

6(2/15) – 1(1/5) = 92/15 – 6/5 = 92/15 – 18/15 = 74/15.

(37/6)/(74/15) = (37/6) * (15/74) = 15/12 = 5/4 = 1,25.

Ответ: 1,25.