2 2/9 - x + 1/6 = - 1 1/3
x = 2 2/9 + 1 1/3 + 1/6
x = 2 4/18 + 1 6/18 + 3/18
x = 3 13/18
Ответ:3 13/18
27/250 : 0,729 = 108/1000 * 1000/729 = 108/729 = 4/27
3 3/7 : (1 : 1 1/6) - 2 7/9 = 24/7 : (1 * 6/7) - 25/9 = 24/7 * 7/6 - 25/9 =
= 4 - 2 7/9 = 1 2/9