First, you convert 1/4 and 1/3 to have a common denominator, or you will use the LCM method ( least common multiple). Their LCM is 12. So multiply 1/4 by 3/3, because 12/4=3. Then multiply 1/3 by 4/4, because 12/3=4. then add the answers together to get you a total of 7/12. After that, subtract 7/12 from the total (12) to get you the remaining part of the pizza which is 5/12.
