高考问答产后手关节疼怎么办:分数计算题
来源：百度文库 编辑：高考问答 时间：2024/05/07 18:33:27
2/5-1/7
5/12-1/9
9/20-11/30
6/7+2/9
5/35-1/8
5/12-1/9
9/20-11/30
6/7+2/9
5/35-1/8
1.2/5-1/7=9/35
2.5/12-1/9 =11/36
3.9/20-11/30 =1/12
4.6/7+2/9 =68/63
5.5/35-1/8=1/56
2/5-1/7 =9/35
5/12-1/9 =11/36
9/20-11/30=1/12
6/7+2/9 =1又5/63
5/35-1/8=1/56
9/35
11/36
1/12
68/63
1/56