x/(x+2+1)=1/2x/(x+3)=1/22x=x+3x=3原分数=x/(x+2)=3/5
五分之三望采纳
解:设这个分数为×。由题意可得:x/(x+2+1) =1/2 x/(x+3)=1/22x=x+3x=3所以原分数=x/(x+2)=3/5
5/3,2+1=3 3+2=5