Add 56/15 and 21/25
1st number: 3 11/15, 2nd number: 21/25
56/15 + 21/25 is 343/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 25 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 15 × 5 = 75,
56/15 = 56 × 5/15 × 5 = 280/75 - Likewise, for the 2nd fraction, since 25 × 3 = 75,
21/25 = 21 × 3/25 × 3 = 63/75 - Add the two like fractions:
280/75 + 63/75 = 280 + 63/75 = 343/75 - So, 56/15 + 21/25 = 343/75
In mixed form: 443/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+42/25 56/30+21/25 56/15+21/50 56/15+63/25 56/45+21/25 56/15+21/75 56/75+21/25