Add 54/56 and 21/9
1st number: 54/56, 2nd number: 2 3/9
54/56 + 21/9 is 277/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 9 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
54/56 = 54 × 9/56 × 9 = 486/504 - Likewise, for the 2nd fraction, since 9 × 56 = 504,
21/9 = 21 × 56/9 × 56 = 1176/504 - Add the two like fractions:
486/504 + 1176/504 = 486 + 1176/504 = 1662/504 - 1662/504 simplified gives 277/84
- So, 54/56 + 21/9 = 277/84
In mixed form: 325/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/56+42/9 54/56+21/18 54/56+63/9 54/56+21/27 54/56+21/45 54/56+21/63