八年级数学分式的约分和通分练习题约分:⑴322423248cbacba⑵bayxbayx23⑶abbca2⑷dbacba32232432⑸432164abcbca⑹44422xxx⑺xxx22497⑻yxaxya271223⑼⑽xyxyyx222⑾mmm1122⑿axxa12xxx122八年级数学通分:⑶⑷2223,2,)(1bababa11,11,11,12xxxx八年级数学⑸mm394,9122⑹2,21xx⑺121,1122xxx⑻221,,bababba⑼121,11,121222aaaaa