Answer: 1/2
Step-by-step explanation: you need to get the fractions to have the same denominator
1/3 = 2/6 and 1/6 = 1/6
Add the two eaten parts together : 2/6+1/6=3/6
Now, subtract the eaten part from the whole pie ( 6/6 or 1 whole)
6/6 - 3/6 = 3/6
So, he gave half of the pie to his friends because.
3/6 is equal to 1/2
