сравните дроби 6/7 и 3/4,4/5 и 5/6

 6/7 и 3/4; 6/7*4=24/28, 3/4*7=21/28 24/28>21/28НОК (7,4)= 284/5 и 5/6; 4/5*6=24/30, 5/6*5=25/30 24/30<25/30НОК (5,6)= 30

6\7›3\4 24\28›21\28 4\5‹5\6 24\30‹25\30