Answer: 5/6 or 0.83~
Step-by-step explanation: Originally the 1st pizza was 3/3 of a pizza and the 2nd pizza was 2/2. 2-3=1, 1-2=1, the remainder of each pizza is 1/3 for the 1st pizza and 1/2 for the 2nd pizza. In order to combine these numbers we need to change the denominator to the least common denominator of of these two numbers which is 6. It turns into 2/6 + 3/6=5/6.
Since this cannot be simplified any more, our answer is 5/6 or 0.83~