Вычислите (1/8+2/9-1/4)*5 1/7:(7/9-2/3+1/6) (10 3/4-12:1 1/5)*4/9+2 1/6+3 1/4 :5 1/5

1) (1/8 + 2/9 - 1/4) * 5 1/7 : (7/9 - 2/3 + 1/6) = (9/72 + 16/72 - 18/72) * (5 * 7 + 1)/7 : (14/18 - 12/18 + 3/18) = 7/72 * 36/7 : 5/18 = 36/72 * 18/5 = 9/5;

Ответ: 9/5.

2) (10 3/4 - 12 : 1 1/5) * 4/9 + 2 1/6 + 3 1/4 : 5 1/5 = (43/4 - 12 : 6/5) * 4/9 + 13/6 + 13/4 : 26/5 = (43/4 - 12 * 5/6) * 4/9 + 13/6 + 13/4 * 5/26 = (43/4 - 40/4) * 4/9 + 13/6 + 5/8 = 3/4 * 4/9 + 52/24 + 15/24 = 8/24 + 67/24 = 75/24 = 25/8;

Ответ: 25/8.