Add 21/6 and 28/30
1st number: 3 3/6, 2nd number: 28/30
21/6 + 28/30 is 133/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Add the two like fractions:
105/30 + 28/30 = 105 + 28/30 = 133/30 - So, 21/6 + 28/30 = 133/30
In mixed form: 413/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+28/30 21/6+56/30 21/12+28/30 21/6+28/60 63/6+28/30 21/6+84/30 21/18+28/30 21/6+28/90 21/30+28/30 21/42+28/30