Add 5/21 and 80/27
1st number: 5/21, 2nd number: 2 26/27
5/21 + 80/27 is 605/189.
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,
5/21 = 5 × 9/21 × 9 = 45/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
80/27 = 80 × 7/27 × 7 = 560/189 - Add the two like fractions:
45/189 + 560/189 = 45 + 560/189 = 605/189 - So, 5/21 + 80/27 = 605/189
In mixed form: 338/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21+80/27 5/42+80/27 5/21+80/54 15/21+80/27 5/63+80/27 5/21+80/81 25/21+80/27 35/21+80/27