What's wrong with it
In order to simplify 20 over 30 you need to divide each number by the SAME NUMBER.So that is what is wrong. They divided 20 over 30 by 5 and 6. That's incorrect.
You have to divide the fraction with one number that can go into both of them. in this case 20/30 would be divided by 10, because 10 fits in both so the answer should be 2/3
