Ответ:

8 12 / 33 * ( 4 1 / 3-2 1/2 ) = 15 1/3 1 ) 4 1 / 3-2 1 / 2 = 13 / 3-5 / 2 = 26 / 6-15 / 6 = 11 / 6 2 ) 8 12 / 33 * 11 / 6 = 276 / 33 * 11 / 6 = 46 / 3 = 15 1/3