Add 56/21 and 7/20
1st number: 2 14/21, 2nd number: 7/20
56/21 + 7/20 is 181/60.
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,
56/21 = 56 × 20/21 × 20 = 1120/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
7/20 = 7 × 21/20 × 21 = 147/420 - Add the two like fractions:
1120/420 + 147/420 = 1120 + 147/420 = 1267/420 - 1267/420 simplified gives 181/60
- So, 56/21 + 7/20 = 181/60
In mixed form: 31/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21+14/20 56/42+7/20 56/21+7/40 56/21+21/20 56/63+7/20 56/21+7/60 56/21+35/20 56/21+49/20