Add 56/8 and 21/27
1st number: 7 0/8, 2nd number: 21/27
56/8 + 21/27 is 70/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
56/8 = 56 × 27/8 × 27 = 1512/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
21/27 = 21 × 8/27 × 8 = 168/216 - Add the two like fractions:
1512/216 + 168/216 = 1512 + 168/216 = 1680/216 - 1680/216 simplified gives 70/9
- So, 56/8 + 21/27 = 70/9
In mixed form: 77/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8+42/27 56/16+21/27 56/8+21/54 56/8+63/27 56/24+21/27 56/8+21/81 56/40+21/27