Question: how to add and subtract fractions and mixed numbers with unlike denominators?
Answer: Step 1: Keep the denominator the same. Step 2: Add or subtract the numerators. ... 
Step 1: Find the Lowest Common Multiple (LCM) between the denominators. ... 
Step 1: Convert all mixed numbers into improper fractions. ... 
In this second method, we will break the mixed number into wholes and parts. ... 
Thus, is equivalent to.