3 divided by 45 I need help I stink at division

Find two rational expressions that have the difference of 2-n/n-4

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

Aof 12 , we to a of 4 to on a .of 4 be ?