1/2+1/6+1/12+1/30+1/42+1/56=?

来源：学生作业帮助网编辑：六六作业网时间：2024/12/20 01:22:19

1/2+1/6+1/12+1/30+1/42+1/56=?1/2+1/6+1/12+1/30+1/42+1/56=?1/2+1/6+1/12+1/30+1/42+1/56=?7/8x裂项相消

1/2+1/6+1/12+1/30+1/42+1/56=?
1/2+1/6+1/12+1/30+1/42+1/56=?

1/2+1/6+1/12+1/30+1/42+1/56=?
7/8

裂项相消

2%1+6%1+12%1+20%1+30%1 1/2+1/6+1/12+1/20+1/30 1/2,-1/6,1/12,-1/20,1/30 1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72 1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72 1+1/2+1/12+1/6+1/20+1/30+1/40+1/56 1/2+1/6+1/12+1/20+1/30+1/42+1/56 简算 1/2+1/6+1/12+1/20+1/30+1/42+1/56简算, 简便运算：1/2+1/6+1/12+1/20+1/30+1/42+1/56 1+1/2+1/6+1/12+1/20+1/30+1/42的简便计算 2/1+6/1+12/1+20/1+30/1+42/1+56/1=? 1/2 - 1/6 - 1/12 - 1/20 - 1/30 - 1/42 - 1/56怎么算 1/2+1/6+1/12+1/20+1/30+.1/380+1/420= 1+1/2+1/6+1/12+1/20+1/30+1/42=? 1/2+1/6+1/12+1/20+1/30+1/42+1/56 1/2-1/6-1/12-1/20-1/30-1/42-1/56等于多少 2/1+6/1+12/1+20/1+30/1+42/1+56/1= 1/2+1/6+1/12+1/20+1/30+...+1/9702+1/9900