1、同分:8/9=16/185/6=15/188/9>5/62、计算:8/9=0.895/6=0.838/9>5/6
8/9=16/18 > 15/18=5/6先通分再比较,只此一法
8/9=16/185/6=15/188/9>5/68/9=0.8895/6=0.8338/9>5/6
16/18>15/18分母通分40/45>40/48分子通分
16/18 15/188/9 》 5/6