(x-y分之1)除以(y-x分之1)_数学解答

(x-y分之1)除以(y-x分之1)

人气：142 ℃　时间：2020-10-01 19:59:25

解答

（x-1/y）/（y-1/x）
(xy/y-1/y)/(xy/x-1/x)
=(xy-1)/y÷[(xy-1)/x]
=(xy-1)/y*[x/[(xy-1)]
=x/y