Which equation can be used to represent the statement?
The sum of one-sixth of a number and negative two is equal to negative two-thirds.
1. One-sixth + n = negative 2 + two-thirds
2. One-sixth + n = negative 2 + (negative two-thirds)
3. One-sixth n + 2 = negative two-thirds
4. One-sixth n minus 2 = negative two-thirds