Based on the phrase "how much longer" this is going to be a subtraction problem 8 2/3 - 6 1/2 Steps: 1. Find the least common denominator. Both 3 and 2 have a multiple of 6 2. Multiply 2/3 by 2 (numerator and denominator) and 1/2 by 3 to get an overall denominator of 6 8 4/6 - 6 3/6 3. Now you can do basic subtraction. Subtract the whole numbers 8-6= 2 4. subtract the numerators 4-3=1 Answer is 2 1/6
