Выполните действия а) (3 7/30 - 1 5/12) : 18 1/16
3 7/30 - 1 5/12 = 97/30 - 17/12 = (97 × 2 - 17 × 5)/60 = (194 - 85)/60 = 109/60 = 1 49/60 1 49/60 : 18 1/16 = 109/60 : 289/16 = 109/60 * 16/289 = 436/4335