Add 56/21 and 27/28
1st number: 2 14/21, 2nd number: 27/28
56/21 + 27/28 is 305/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
56/21 = 56 × 4/21 × 4 = 224/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
27/28 = 27 × 3/28 × 3 = 81/84 - Add the two like fractions:
224/84 + 81/84 = 224 + 81/84 = 305/84 - So, 56/21 + 27/28 = 305/84
In mixed form: 353/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21+54/28 56/42+27/28 56/21+27/56 56/21+81/28 56/63+27/28 56/21+27/84