Question

Найдите значения выражений 
(1+2 2/3):(4/5-4/15)                 (2/3+1/12+7/24):50

Answer 1

(1+2 2/3):(4/5-4/15)=
(1+8/3)/(12/15-4/15)=
11/3 / 8/15 = 11/3 * 15/8 = 55/8 = 6 7/8

(2/3+1/12+7/24):50=
(16/24+2/24+7/24)/50=
25/24 / 50/1 = 25/24 * 1/50=
1/48