Final answer:
To add fractions with unlike denominators, find a common denominator. Rewrite each fraction so they have the same denominator. Then, add the numerators together.
Step-by-step explanation:
When adding fractions with unlike denominators, you need to find a common denominator before you can add them. To do this, you need to find the least common multiple (LCM) of the denominators. Once you have the common denominator, you can rewrite each fraction with equivalent fractions that have the same denominator. Then, you can add the numerators together to get the sum. For example, to add 1/2 and 3/4, the LCM of 2 and 4 is 4. So, you rewrite 1/2 as 2/4 and 3/4 remains unchanged. Then, you can add the numerators: 2/4 + 3/4 = 5/4.