65/100 (y-1)= 37/100 (y+1)+0.1

问题描述:

65/100 (y-1)= 37/100 (y+1)+0.1
/=分数线

0.65y-0.65=0.37y+0.37+0.1
0.28y=0.65+0.37+0.1=1.12
y=1.12/0.28=4