а)1/2 и 1/3=3/6 и 2/6 наим. общ знам.= 6
б)2/5 и 3/4= 8/20 и 15/20 знам.=20
в)1/2 и 3/7= 7/14 и 6/14 знам. = 14
г) 3/5 и 2/3 = 9/15 и 10/15 знам.=15
д) 3/2 и 7/5 = 15/10 и 14/10 знам= 10
е) ...= 15/12 и 16/12 знам=12
ж) ...= 22/77 и 56/77 знам=77
з) ...= 25/100 и 36/100 знам=100
и) ...=9/30 и 10/30 знам=30