(X+y)/y•((x/x+y)-(x-y)/x)

Question

(X+y)/y•((x/x+y)-(x-y)/x)

Answer 1

(х+у)\у * ( х*х -х*(х+у) ) \ х (х+у) = (х+у) \у * (х²-х²+у²) \ х (х+у) =
(х+у) \ у * у² \ х (х+у) = у \ х