Add 4/81 and 10/21
4/81 + 10/21 is 298/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 21 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
4/81 = 4 × 7/81 × 7 = 28/567 - Likewise, for the 2nd fraction, since 21 × 27 = 567,
10/21 = 10 × 27/21 × 27 = 270/567 - Add the two like fractions:
28/567 + 270/567 = 28 + 270/567 = 298/567 - So, 4/81 + 10/21 = 298/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/81+10/21 4/81+20/21 4/81+10/42 12/81+10/21 4/81+30/21 4/81+10/63 20/81+10/21 4/81+50/21 28/81+10/21 4/81+70/21