Add 54/21 and 10/81
1st number: 2 12/21, 2nd number: 10/81
54/21 + 10/81 is 1528/567.
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,
54/21 = 54 × 27/21 × 27 = 1458/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
10/81 = 10 × 7/81 × 7 = 70/567 - Add the two like fractions:
1458/567 + 70/567 = 1458 + 70/567 = 1528/567 - So, 54/21 + 10/81 = 1528/567
In mixed form: 2394/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+20/81 54/42+10/81 54/21+30/81 54/63+10/81 54/21+50/81 54/21+70/81