Add 60/21 and 20/81
1st number: 2 18/21, 2nd number: 20/81
60/21 + 20/81 is 1760/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 21 × 27 = 567,
60/21 = 60 × 27/21 × 27 = 1620/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
20/81 = 20 × 7/81 × 7 = 140/567 - Add the two like fractions:
1620/567 + 140/567 = 1620 + 140/567 = 1760/567 - So, 60/21 + 20/81 = 1760/567
In mixed form: 359/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+40/81 60/42+20/81 60/21+60/81 60/63+20/81