Question 306655
(3x+3y+3)/9x ÷ (x^2+2xy+y^2-1)/(x^4+ x^2)

3(x+y+1)/9x   / (x+y)^2-1 / x^2(x^2+1)

3(x+y+1)/9x * x^2(x+1) / (x+y+1)(x+y-1)

1/3x * x^2(x+1) / (x+y-1)

1/3 * x(x+1) / (x+y-1)

x(x+1) / 3(x+y-1)