Add 27/56 and 21/18
1st number: 27/56, 2nd number: 1 3/18
27/56 + 21/18 is 277/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
27/56 = 27 × 9/56 × 9 = 243/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
21/18 = 21 × 28/18 × 28 = 588/504 - Add the two like fractions:
243/504 + 588/504 = 243 + 588/504 = 831/504 - 831/504 simplified gives 277/168
- So, 27/56 + 21/18 = 277/168
In mixed form: 1109/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+21/18 27/56+42/18 27/56+21/36 81/56+21/18 27/56+63/18 27/56+21/54 27/56+21/90