1. Which is the sum of 4/9 and 3/9?
2. Which is 5 4/9 added to 6/9?
3. Which is 5/15 more than 9 2/5?
4. Which is 6 1/2 increased to 5 2/3?
5. What is N's value in 3 3/6 and 4 4/14 = N?