1983+1985+1987……+1999/1984+1986……+2000大神们帮帮忙
“/”是分数线.要简算、最简单最简单的哦. 因为这道题有很多方法.我的方法不是最简单的.希望得到正解 最后答案是 1991/1992 ! 快点哦.满意会追加悬赏!
人气：415 ℃ 时间：2020-01-29 01:25:37
解答
[9*(1983+1999)/2]/[9*(1984+2000)/2]=(1983+1999)/(1984+2000)=1991/1992
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