|1/3-1/4|+|1/4-1/5|+……+|1/20一1/19|
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 13:37:01
|1/3-1/4|+|1/4-1/5|+……+|1/20一1/19|
|1/3-1/4|+|1/4-1/5|+……+|1/20一1/19|
|1/3-1/4|+|1/4-1/5|+……+|1/20一1/19|
1/3-1/20=17/60
括号内的直接取出来
=1/3-1/20=17/60
|1/3-1/4|+|1/4-1/5|+……+|1/20一1/19|
|1/3-1/4|+|1/4-1/5|+……+|1/20一1/19|
|1/3-1/4|+|1/4-1/5|+……+|1/20一1/19|
1/3-1/20=17/60
括号内的直接取出来
=1/3-1/20=17/60