Find 9:3 in simplest form.
9:3 can be simplified further because they both have a common factor (a number that they both can be divided by).
In this case their common factor is 3, since 9 can be divided by 3 and so can 3.
This would simplify the ratio 9:3 to become (9/3):(3/3)
Which gives 9:3 in it's simplest form to be 3:1