Add 4/27 and 21/20
1st number: 4/27, 2nd number: 1 1/20
4/27 + 21/20 is 647/540.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
4/27 = 4 × 20/27 × 20 = 80/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
21/20 = 21 × 27/20 × 27 = 567/540 - Add the two like fractions:
80/540 + 567/540 = 80 + 567/540 = 647/540 - So, 4/27 + 21/20 = 647/540
In mixed form: 1107/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/27+21/20 4/27+42/20 4/54+21/20 4/27+21/40 12/27+21/20 4/27+63/20 4/81+21/20 4/27+21/60 20/27+21/20 28/27+21/20