|1-1/2|+|1/3-1/4|……|1/9-1/10|等于多少啊?,

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|1-1/2|+|1/3-1/4|……|1/9-1/10|等于多少啊?,
|1-1/2|+|1/3-1/4|……|1/9-1/10|等于多少啊?,

|1-1/2|+|1/3-1/4|……|1/9-1/10|等于多少啊?,
11-1/2|+|1/3-1/4|……|1/9-1/10|等于多少啊?
1/2+1/12+1/30+1/56+1/90=74/120+1/56+1/90