First we need to get common denominators
Since 12 has a factor of 4 we would multiply the denominator by 3. Remember whatever you do to the denominator must be done to the numerator.
1 x 3 = 3
4 x 3 = 12
So now we have 5/12 - 3/12. So then we subtract the numerators and we are done.
5 - 3 = 2, So our answer is 2/12
