simplify the following expression and rewrite it in an equivalent form with positive exponents

Question

24x^3y^-3/72x^-5y^-1

24*3*3*3/72*-5*-5*-5*-5*-5=
This is how I have it started on my paper. my online book is down and im stuck. Thank you.

Answer 1

24x^3y^-3 / 72x^-5y^-1 =
x^3y^-3 / 3x^-5y^-1 = x^8y^-2 / 3 =
x^8 / 3y^2.