Add 35/21 and 84/81
1st number: 1 14/21, 2nd number: 1 3/81
35/21 + 84/81 is 73/27.
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,
35/21 = 35 × 27/21 × 27 = 945/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
84/81 = 84 × 7/81 × 7 = 588/567 - Add the two like fractions:
945/567 + 588/567 = 945 + 588/567 = 1533/567 - 1533/567 simplified gives 73/27
- So, 35/21 + 84/81 = 73/27
In mixed form: 219/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+84/81 35/42+84/81 35/63+84/81