Add 2/21 and 28/27
1st number: 2/21, 2nd number: 1 1/27
2/21 + 28/27 is 214/189.
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,
2/21 = 2 × 9/21 × 9 = 18/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
28/27 = 28 × 7/27 × 7 = 196/189 - Add the two like fractions:
18/189 + 196/189 = 18 + 196/189 = 214/189 - So, 2/21 + 28/27 = 214/189
In mixed form: 125/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+28/27 2/21+56/27 2/42+28/27 2/21+28/54 6/21+28/27 2/21+84/27 2/63+28/27 2/21+28/81 10/21+28/27 14/21+28/27