3/1+15/1+35/1+63/1+99/1
1/3+1/15+1/35+1/63+1/99
1\3+1\15+1\35+1\63+1\99
1/3+1/15+1/35+1/63+1/99+1/145+1/195+1/255
1/15+1/35+1/63+1/99+1/143
简算:3/1+15/1+35/1+63/1+99/1+143/1+195/1=?
1/3+1/15+1/35+1/63+1/99+1/143+1/195简便
(1/3+1/15+1/35+1/63+1/99+1/143)*80
1-1/3-1/15-1/35-1/63-1/99=?
1/3+1/15+1/35+1/63+1/99+1/143的简便运算
1/3+1/15+1/35+1/63+/1+1/99=?
1/3+1/15+1/35+1/63+1/99+1/143
3/1+1/15+1/35+1/63+1/99+1/143 简便计算