Add 5/8 and 21/14
1st number: 5/8, 2nd number: 1 7/14
5/8 + 21/14 is 17/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 14 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 14 × 4 = 56,
21/14 = 21 × 4/14 × 4 = 84/56 - Add the two like fractions:
35/56 + 84/56 = 35 + 84/56 = 119/56 - 119/56 simplified gives 17/8
- So, 5/8 + 21/14 = 17/8
In mixed form: 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8+21/14 5/8+42/14 5/16+21/14 5/8+21/28 15/8+21/14 5/8+63/14 5/24+21/14 5/8+21/42 25/8+21/14 5/40+21/14 5/8+21/70 35/8+21/14 5/56+21/14 5/8+21/98