Here are the steps to add fractions with mixed numbers:
1. Convert the mixed numbers to improper fractions.
2. Find the least common multiple (LCM) of the denominators.
3. Rewrite the fractions as equivalent fractions with the same denominator.
4. Add the fractions.
5. Simplify the answer if possible.
6. Convert the answer back to a mixed number if necessary.
Here is an example:
```
1 1/2 + 2 1/3
= 3/2 + 7/3 (convert mixed numbers to improper fractions)
= 9/6 + 14/6 (rewrite fractions with common denominator)
= 23/6 (add fractions)
= 3 5/6 (convert back to mixed number)
```
