3/5х - 3/х+у * (х+у/5х-х-у)

Question

3/5х - 3/х+у * (х+у/5х-х-у)

Answer 1

3/5x-3/(x+y)*(x+y)/(4x-y)=3/5x-3/(4x-y)=3(4x-y)-3*5x/5x(4x-y)=(12x-3y-15x)/(20x2-5xy)=-3(y+x)/5x(4x-y)