5/7 + 1/4

To add fractions with different denominators like 5/7 and 1/4, you need to find a common denominator. In this case, the least common multiple of 7 and 4 is 28. Next, you need to convert both fractions to have the same denominator of 28. For 5/7, you multiply both the numerator and denominator by 4 to get 20/28. For 1/4, you multiply both the numerator and denominator by 7 to get 7/28. Now, you can add the fractions: 20/28 + 7/28 = 27/28. So, the answer is 27/28 when you add 5/7 and 1/4 together.