To find the total pies left,we can simply add up the amount left.
The solving steps would be:
[tex]3 \frac{1}{3} + 2 \frac{5}{6} \\ = \frac{10}{3} + \frac{17}{6} \\ = \frac{10 \times 2}{3 \times 2} + \frac{17}{6} \\ = \frac{37}{6} \\ = 6 \frac{1}{6} [/tex]
Alternatively:
[tex]3 \frac{1}{3} + 2 \frac{5}{6} \\ = 3 \frac{1×2}{3×2} + 2 \frac{5}{6} \\ = 3\frac{2}{6} + 2 \frac{5}{6} \\ = 5 \frac{7}{6} \\ = 6 \frac{1}{6}[/tex]
Therefore the answer is 6 1/6.
Hope it helps!