Question 308282
y / (x2 – xy)  -  x / (y2 – xy)
y/x(x-y)- x/y(x-y)

LCM xy(x-y)

y^2-x^2 / xy(x-y)

(y+x)(y-x)/ xy (x-y)

-(y+x)(x-y) / xy(x-y)

-(y+x)/xy