Andy and his classmates voted on the most popular jobs. 1) What are they?

1. ((7//15)+7/30+4/5):(2-1/3-1/2)
2. ((7//15)+(7//30)+4/5):(2-1/3-1/2)
3. (0.7+4/5):(2-1/3-1/2)
4. (0.7+0.8):(2-1/3-1/2)
5. 1.5:(2-1/3-1/2)
6. 1.5:(2-(1//3)-1/2)
7. 1.5:((5//3)-1/2)
8. 1.5:((5//3)-0.5)
9. 1.5:(7//6)
10. 9//7