2/3-1/4=

To subtract fractions with different denominators, first find a common denominator. In this case, the least common multiple of 3 and 4 is 12.

2/3 = (2*4)/(3*4) = 8/12
1/4 = (1*3)/(4*3) = 3/12

Now that both fractions have the same denominator, subtract the numerators:

8/12 - 3/12 = (8 - 3)/12 = 5/12

Therefore, 2/3 - 1/4 = 5/12.