How do you solve 2/3-1/4

You have to find the least common denominator, which in this case would be 12.

8/12 - 3/12 = 5/12

Before you can add or subtract fractions, they must have a common denominator.

- - Find a common denominator for [ something/3 ] and [ something/4 ].

- - When you have both of the fractions changed to a common denominator, you can just subtract the second numerator from the first one, and write that difference over the same common denominator.