这道题怎么做，快快快好评哦！要算式，快解答

Question

如题所述

Answer 1

Answer 2

设这个分数为x╱y，则有
（x+1）╱（y+1）＝1╱2
（x-1）╱（y-1）＝2╱5
即2x+1＝y
5x-3＝2y
解得x＝5
y＝11
即这个分数为5╱11。

Answer 3

答案是5/11，
过程：(x+1)/(y+1)=1/2;
(x-1)/(y-1)=2/5
解得：x=5,y=11
求采纳。

Answer 4

(x+1)/(y+1) = 1/2
(x-1)/(y-1) = 2/5追答

5(x+1) / 5(y+1) = 5/10
2(x-1) / 2(y-1) = 4/10

5(x+1) - 2(x-1) =5-4=1
5(y+1) - 2(y-1) =10-10=0

Answer 5

十一分之五

Answer 6

6分之3