Math help, fractions and exponents

(3x-9) over (x^2 - 6x +9)
please simplify and show how it is done

==> (3x - 9) / (x^2 - 6x + 9)
==> 3(x - 3) / (x - 3)(x - 3)
==> 3 / (x - 3) .... with or without brackets