Add 84/3 and 21/36
1st number: 28 0/3, 2nd number: 21/36
84/3 + 21/36 is 343/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 3 × 12 = 36,
84/3 = 84 × 12/3 × 12 = 1008/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Add the two like fractions:
1008/36 + 21/36 = 1008 + 21/36 = 1029/36 - 1029/36 simplified gives 343/12
- So, 84/3 + 21/36 = 343/12
In mixed form: 287/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/3+42/36 84/6+21/36 84/3+21/72 84/3+63/36 84/9+21/36 84/15+21/36 84/21+21/36