Add 21/14 and 21/8
1st number: 1 7/14, 2nd number: 2 5/8
21/14 + 21/8 is 33/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 14 × 4 = 56,
21/14 = 21 × 4/14 × 4 = 84/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
21/8 = 21 × 7/8 × 7 = 147/56 - Add the two like fractions:
84/56 + 147/56 = 84 + 147/56 = 231/56 - 231/56 simplified gives 33/8
- So, 21/14 + 21/8 = 33/8
In mixed form: 41/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+21/8 21/14+42/8 21/28+21/8 21/14+21/16 63/14+21/8 21/14+63/8 21/42+21/8 21/14+21/24 21/70+21/8 21/14+21/40 21/98+21/8 21/14+21/56