Add 5/8 and 21/28
5/8 + 21/28 is 11/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 28 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
5/8 = 5 × 7/8 × 7 = 35/56 - Likewise, for the 2nd fraction, since 28 × 2 = 56,
21/28 = 21 × 2/28 × 2 = 42/56 - Add the two like fractions:
35/56 + 42/56 = 35 + 42/56 = 77/56 - 77/56 simplified gives 11/8
- So, 5/8 + 21/28 = 11/8
In mixed form: 13/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8+21/28 5/8+42/28 5/16+21/28 5/8+21/56 15/8+21/28 5/8+63/28 5/24+21/28 5/8+21/84 25/8+21/28 5/40+21/28 35/8+21/28 5/56+21/28