How do I simplify the equation 3y^2-3 over y^2-1 (This is a fraction).

How do I simplify the equation 3y^2-3 over y^2-1 ?

$$\dfrac{3y^2-3 }{ y^2-1}\\\\ =\dfrac{3\cdot(y^2-1) }{ y^2-1}\\\\ =3$$

$$\\\frac{3y^2-3 }{ y^2-1}\\\\ =\frac{3(y^2-1) }{ y^2-1}\\\\ =3$$