11цлых5/36-(2целых1/24-1целоя 7/18)=
11 5/36 - (2 1/24 - 1 7/18) = 11 5/36 - ( 49/24 - 25/18) = 401/36 - (147/72 - 100/72) = 401/36 - 47/72 = 802/72 - 47/72 = 755/ 72 = 10 35/72