Вычислите:7/9+5/6-2цел.3/11=
7/9 + 5/6 = 14/18 + 15/18 = 29/18 = 1 11/18 1 11/18 - 2 3/11 = 29/18 - 25/11 = 319/198 - 450/198 = - 131/198