Add 27/14 and 21/20
1st number: 1 13/14, 2nd number: 1 1/20
27/14 + 21/20 is 417/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
27/14 = 27 × 10/14 × 10 = 270/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
21/20 = 21 × 7/20 × 7 = 147/140 - Add the two like fractions:
270/140 + 147/140 = 270 + 147/140 = 417/140 - So, 27/14 + 21/20 = 417/140
In mixed form: 2137/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/14+21/20 27/14+42/20 27/28+21/20 27/14+21/40 81/14+21/20 27/14+63/20 27/42+21/20 27/14+21/60 27/70+21/20 27/98+21/20