Add 56/3 and 15/7
1st number: 18 2/3, 2nd number: 2 1/7
56/3 + 15/7 is 437/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
56/3 = 56 × 7/3 × 7 = 392/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
15/7 = 15 × 3/7 × 3 = 45/21 - Add the two like fractions:
392/21 + 45/21 = 392 + 45/21 = 437/21 - So, 56/3 + 15/7 = 437/21
In mixed form: 2017/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/3+30/7 56/6+15/7 56/3+15/14 56/3+45/7 56/9+15/7 56/3+15/21 56/3+75/7 56/15+15/7 56/3+15/35 56/21+15/7 56/3+15/49