Answer:

Explanation:
The fraction 3/9 can be reduced to 1/3. In turn, that can be rewritten using the denominator 6 as 2/6, so that addition with 1/6 is easier.
1 2/6 + 1 1/6 = (1 +1) +(2/6 +1/6) = 2 3/6
The fraction 3/6 can be reduced to 1/2, so the end result is ...
1 3/9 + 1 1/6 = 2 1/2