Add 63/28 and 84/81
1st number: 2 7/28, 2nd number: 1 3/81
63/28 + 84/81 is 355/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
63/28 = 63 × 81/28 × 81 = 5103/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
84/81 = 84 × 28/81 × 28 = 2352/2268 - Add the two like fractions:
5103/2268 + 2352/2268 = 5103 + 2352/2268 = 7455/2268 - 7455/2268 simplified gives 355/108
- So, 63/28 + 84/81 = 355/108
In mixed form: 331/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/56+84/81 63/84+84/81