Add 20/9 and 21/54
1st number: 2 2/9, 2nd number: 21/54
20/9 + 21/54 is 47/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 9 × 6 = 54,
20/9 = 20 × 6/9 × 6 = 120/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
21/54 = 21 × 1/54 × 1 = 21/54 - Add the two like fractions:
120/54 + 21/54 = 120 + 21/54 = 141/54 - 141/54 simplified gives 47/18
- So, 20/9 + 21/54 = 47/18
In mixed form: 211/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9+21/54 20/9+42/54 20/18+21/54 60/9+21/54 20/9+63/54 20/27+21/54 20/45+21/54 20/63+21/54