Add 35/21 and 3/20
1st number: 1 14/21, 2nd number: 3/20
35/21 + 3/20 is 109/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
35/21 = 35 × 20/21 × 20 = 700/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
3/20 = 3 × 21/20 × 21 = 63/420 - Add the two like fractions:
700/420 + 63/420 = 700 + 63/420 = 763/420 - 763/420 simplified gives 109/60
- So, 35/21 + 3/20 = 109/60
In mixed form: 149/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+3/20 35/21+6/20 35/42+3/20 35/21+3/40 35/21+9/20 35/63+3/20 35/21+3/60 35/21+15/20 35/21+21/20