Add 21/6 and 28/27
1st number: 3 3/6, 2nd number: 1 1/27
21/6 + 28/27 is 245/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 6 × 9 = 54,
21/6 = 21 × 9/6 × 9 = 189/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
28/27 = 28 × 2/27 × 2 = 56/54 - Add the two like fractions:
189/54 + 56/54 = 189 + 56/54 = 245/54 - So, 21/6 + 28/27 = 245/54
In mixed form: 429/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+28/27 21/6+56/27 21/12+28/27 21/6+28/54 63/6+28/27 21/6+84/27 21/18+28/27 21/6+28/81 21/30+28/27 21/42+28/27