Answer:
5/12
Explanation:
First we want to have common denominators, and since some of our answers are in twelfths anyways, we might as well go straight to those instead of multiplying to get common denominators of sixths.
Make the denominators of the two fractions we are given into twelfths
(-multiply 1/2 by 6 on the top and bottom to get 6/12, and multiply 1/3 by 4 on the top and bottom to get 4/12.
5/12 is perfectly halway between 6/12 and 4/12 so we have our answer! :)