Add 80/27 and 21/40
1st number: 2 26/27, 2nd number: 21/40
80/27 + 21/40 is 3767/1080.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
80/27 = 80 × 40/27 × 40 = 3200/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
21/40 = 21 × 27/40 × 27 = 567/1080 - Add the two like fractions:
3200/1080 + 567/1080 = 3200 + 567/1080 = 3767/1080 - So, 80/27 + 21/40 = 3767/1080
In mixed form: 3527/1080
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/27+42/40 80/54+21/40 80/27+21/80 80/27+63/40 80/81+21/40