1/2+(1/3-1/3)+(1/4+1/4)+(1/5-1/5)-(1/6+1/6)+(1/7-1/7）+1/8
=1/2+2/4+2/6+1/8
=12/24+12/24+8/24+3/24
=1又11/24
这是我能想到最简的啊,好像以前也做过相似的呢……望采纳~