Add 60/21 and 15/20
1st number: 2 18/21, 2nd number: 15/20
60/21 + 15/20 is 101/28.
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,
60/21 = 60 × 20/21 × 20 = 1200/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
15/20 = 15 × 21/20 × 21 = 315/420 - Add the two like fractions:
1200/420 + 315/420 = 1200 + 315/420 = 1515/420 - 1515/420 simplified gives 101/28
- So, 60/21 + 15/20 = 101/28
In mixed form: 317/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+30/20 60/42+15/20 60/21+15/40 60/21+45/20 60/63+15/20 60/21+15/60 60/21+75/20