д) 3/4 - 1/6 = (36)/(46) - (14)/(64) = 18/24 - 4/24 = 14/24 = 7/12
е) 5/6 + 1/9 = (59)/(69) + (16)/(96) = 45/54 + 6/54 = 51/54 = 17/18
д) 3/4 - 1/6 = (36)/(46) - (14)/(64) = 18/24 - 4/24 = 14/24 = 7/12
е) 5/6 + 1/9 = (59)/(69) + (16)/(96) = 45/54 + 6/54 = 51/54 = 17/18