Add 56/5 and 21/18
1st number: 11 1/5, 2nd number: 1 3/18
56/5 + 21/18 is 371/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
56/5 = 56 × 18/5 × 18 = 1008/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
1008/90 + 105/90 = 1008 + 105/90 = 1113/90 - 1113/90 simplified gives 371/30
- So, 56/5 + 21/18 = 371/30
In mixed form: 1211/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5+42/18 56/10+21/18 56/5+21/36 56/5+63/18 56/15+21/18 56/5+21/54 56/25+21/18 56/5+21/90 56/35+21/18