Add 18/54 and 63/28
1st number: 18/54, 2nd number: 2 7/28
18/54 + 63/28 is 31/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 28 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 54 × 14 = 756,
18/54 = 18 × 14/54 × 14 = 252/756 - Likewise, for the 2nd fraction, since 28 × 27 = 756,
63/28 = 63 × 27/28 × 27 = 1701/756 - Add the two like fractions:
252/756 + 1701/756 = 252 + 1701/756 = 1953/756 - 1953/756 simplified gives 31/12
- So, 18/54 + 63/28 = 31/12
In mixed form: 27/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54+63/28 18/54+63/56 18/54+63/84 90/54+63/28