Question

номер 462 1)Пример пожалуйста

Answer 1

(2 5/9 - 1 20/21): 1 8/49+1 8/9:6= 5/6

1) 2 5/9-1 20/21= 2 35/63-1 60/63= 1 98/63-1 60/63= 38/63
2) 38/63:1 8/49= 38/63*49/57= 14/27
3) 1 8/9:6= 17/9*1/6= 17/54
4) 14/27+17/54= 28/54+17/54= 5/6