Add 56/9 and 21/18
1st number: 6 2/9, 2nd number: 1 3/18
56/9 + 21/18 is 133/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
56/9 = 56 × 2/9 × 2 = 112/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18 - Add the two like fractions:
112/18 + 21/18 = 112 + 21/18 = 133/18 - So, 56/9 + 21/18 = 133/18
In mixed form: 77/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/9+42/18 56/18+21/18 56/9+21/36 56/9+63/18 56/27+21/18 56/9+21/54 56/45+21/18 56/9+21/90 56/63+21/18