Выполните действие:а) 5/12+3/10 б) 3/16+5/24 в) 2/7-5/42 г) 11/21-3/14

5/12 + 3/10 = 25/60 + 18/60 = 43/60--------------------------3/16 + 5/24 = 9/48 + 10/48 = 19/48-----------------------------2/7 - 5/42 =12/42 - 5/42 = 7/42 = 1/6----------------------------11/21 - 3/14 = 22/42 - 9/42 = 13/42