You first have to find there greatest common factor (the biggest number that can be divide into both numbers) in this case it would be 12. You then divide 12 by 12 which equals 1.Then divide 12 by 72 which equals 6. Then you put your numerator or top number over your denominator or bottom number. Which should leave you with 1 over 6
3 over 12 put in simplest form is 1/4.
60/12 = 5
the simplest form of 8 over 12 would be 2 over 3...easiest way to find out is to divide them they should both have the same answer!
7/12 is in its simplest form.
5/12 is in its simplest form.
12/133 is in its simplest form.
17/12 is the simplest form.
12/17 is in simplest form.
13/12 is in its simplest form.
1/2 is in its simplest form.
5 over 12 is in simplest form.
12 over 14 in its simplest form is 6/7