Multiplying rational expresssions solve t^2-t-12/t+1 * t+1/t+3 show answer with working

First simplify t^2-t-12, which becomes (t-4)(t+3)
now you can rewrite the expression as one term; (t-4)(t+3)(t+1)/(t+1)(t+3)
cancel out (t+3) and (t+1) which leaves the answer as (t-4)