一个分数的分母加4,这个分数就是10/11.,如果在原来分数的分子上加1,这个分数就等于1.这个分数是多少?
人气：348 ℃ 时间：2020-02-03 11:19:39
解答
设分子为x分母为y,有x/(y+4)=10/11,
且x+1/y=1,由此式子知道x+1=y,带入第一个式子,知道,x/x+5=10/11.
所以x=50y=51
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