Add 35/14 and 21/20
1st number: 2 7/14, 2nd number: 1 1/20
35/14 + 21/20 is 71/20.
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,
35/14 = 35 × 10/14 × 10 = 350/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
21/20 = 21 × 7/20 × 7 = 147/140 - Add the two like fractions:
350/140 + 147/140 = 350 + 147/140 = 497/140 - 497/140 simplified gives 71/20
- So, 35/14 + 21/20 = 71/20
In mixed form: 311/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/14+21/20 35/14+42/20 35/28+21/20 35/14+21/40 35/14+63/20 35/42+21/20 35/14+21/60 35/70+21/20 35/98+21/20