Add 15/21 and 56/27
1st number: 15/21, 2nd number: 2 2/27
15/21 + 56/27 is 527/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
15/21 = 15 × 9/21 × 9 = 135/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
56/27 = 56 × 7/27 × 7 = 392/189 - Add the two like fractions:
135/189 + 392/189 = 135 + 392/189 = 527/189 - So, 15/21 + 56/27 = 527/189
In mixed form: 2149/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21+56/27 15/42+56/27 15/21+56/54 45/21+56/27 15/63+56/27 15/21+56/81 75/21+56/27