Add 25/81 and 21/49
25/81 + 21/49 is 418/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 49 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 81 × 49 = 3969,
25/81 = 25 × 49/81 × 49 = 1225/3969 - Likewise, for the 2nd fraction, since 49 × 81 = 3969,
21/49 = 21 × 81/49 × 81 = 1701/3969 - Add the two like fractions:
1225/3969 + 1701/3969 = 1225 + 1701/3969 = 2926/3969 - 2926/3969 simplified gives 418/567
- So, 25/81 + 21/49 = 418/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/81+21/49 25/81+42/49 25/81+21/98 75/81+21/49 25/81+63/49