Which equation and solution can be used to solve this problem? Thirteen less than a. number is sixteen.
1. 13-n=16: Add 13 to both sides. The answer is 29.
2. n+13=16: Subtract 13 from both sides. The answer is 3
3. n+16=13: Subtract 13 from both sides. The answer is 3
4. n-13=16: Add 13 to both sides. The answer is 29