Answer:
The Sum is 49/12 (improper), or 4 1/12 (mixed).
The Difference of these 2 fractions would be 2 1/3 - 1 3/4 instead of adding them. The answer is 7/12.
Explanation:
I did it by converting the mixed fractions into improper fractions, then making the denominators the same, and adding them together.