Hello there! You can structure these word problems correctly, by looking at the key words and tying them in to write the problem correctly. Number is represented by the variable "n". With that being said, if you do it right, here are the answers:
1. n - 18
2. n - 16
3. x + 12 = 21
4. x * 12 = 46
5. 6 + 12
6. 2 * 8
7. 2n + 6
8. 8/2n
9. 7 + x
10. x * 11 = 33