Add 6/3 and 21/15
1st number: 2 0/3, 2nd number: 1 6/15
6/3 + 21/15 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
6/3 = 6 × 5/3 × 5 = 30/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
21/15 = 21 × 1/15 × 1 = 21/15 - Add the two like fractions:
30/15 + 21/15 = 30 + 21/15 = 51/15 - 51/15 simplified gives 17/5
- So, 6/3 + 21/15 = 17/5
In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/3+21/15 6/3+42/15 6/3+21/30 18/3+21/15 6/3+63/15 6/9+21/15 6/3+21/45 30/3+21/15 6/15+21/15 6/3+21/75 42/3+21/15 6/21+21/15