а) 7/12 - 1/60 = 35/60 - 1/60 = 34/60 = 17/30
б) 35/65 - 4/13 = 13/65 - 20/65 = -7/65
в) 3/10 - 45/1000 = 300/1000 - 45/1000 = 255/1000 = 51/200
г) 2/7 - 3/35 = 10/35 - 3/35 = 7/35 = 1/5
д) 21/32 - 1/8 = 168/256 - 32/256 = 136/256 = 17/32
е) 21/27 - 4/9 = 63/81 - 36/81 = 27/81 = 1/3
а) 7/12 - 1/60 = 35/60 - 1/60 = 34/60 = 17/30
б) 35/65 - 4/13 = 13/65 - 20/65 = -7/65
в) 3/10 - 45/1000 = 300/1000 - 45/1000 = 255/1000 = 51/200
г) 2/7 - 3/35 = 10/35 - 3/35 = 7/35 = 1/5
д) 21/32 - 1/8 = 168/256 - 32/256 = 136/256 = 17/32
е) 21/27 - 4/9 = 63/81 - 36/81 = 27/81 = 1/3