To tackle , first convert the mixed numbers into improper fractions. For , this becomes (since ). For , it simplifies to , which can be converted to for easier subtraction. Thus, we have:

Converting back to a mixed number, . So, the final answer is .

When working with mixed numbers, a common pitfall is forgetting to convert everything into either improper fractions or a consistent format before performing calculations. Take your time with conversions to avoid mistakes!