Add 28/21 and 3/6
1st number: 1 7/21, 2nd number: 3/6
28/21 + 3/6 is 11/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
28/21 = 28 × 2/21 × 2 = 56/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
3/6 = 3 × 7/6 × 7 = 21/42 - Add the two like fractions:
56/42 + 21/42 = 56 + 21/42 = 77/42 - 77/42 simplified gives 11/6
- So, 28/21 + 3/6 = 11/6
In mixed form: 15/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21+3/6 28/42+3/6 28/21+3/12 84/21+3/6 28/21+9/6 28/63+3/6 28/21+3/18 28/21+15/6 28/21+3/30 28/21+21/6 28/21+3/42