2/(1*3)+|1/2-1/4|+2/(3*5)+|1/4-1/6|+2/(5*7)+|1/6-1/8|.2/(27*29)+|1/28-1/30|=?

问题描述:

2/(1*3)+|1/2-1/4|+2/(3*5)+|1/4-1/6|+2/(5*7)+|1/6-1/8|.2/(27*29)+|1/28-1/30|=?

2/(1*3)+|1/2-1/4|+2/(3*5)+|1/4-1/6|+2/(5*7)+|1/6-1/8|.2/(27*29)+|1/28-1/30|=(1-1/3+1/3-1/5+1/5-1/7+……+1/27-1/29)+(1/2-1/4+1/4-1/6+1/6-1/8+……+1/28-1/30)=(1-1/29)+(1/2-1/30)=28/29+7/...