Directions: Add the following rational numbers.express your answers in simplest forms
1. 3/7 + 2/7
2. 4/10 + 2/5
3. 18/5 + 1/5
4. 5/7 + 9/4
5. 1/10 + 4/100
6. 36/5 + (-33/10)
7. 3 1/2 + 4 4/5
8. 5 1/4 + 2 4/5
9. Rommel played clash of clans for 2 1/2 hours in the morning and 1 1/4hours in the afternoon how many hours did rommel plays clash of clans for the whole day?