Add 28/81 and 28/12
1st number: 28/81, 2nd number: 2 4/12
28/81 + 28/12 is 217/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
28/81 = 28 × 4/81 × 4 = 112/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
28/12 = 28 × 27/12 × 27 = 756/324 - Add the two like fractions:
112/324 + 756/324 = 112 + 756/324 = 868/324 - 868/324 simplified gives 217/81
- So, 28/81 + 28/12 = 217/81
In mixed form: 255/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/81+28/12 28/81+56/12 28/81+28/24 84/81+28/12 28/81+84/12 28/81+28/36 28/81+28/60 28/81+28/84