Add 64/3 and 21/84
1st number: 21 1/3, 2nd number: 21/84
64/3 + 21/84 is 259/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 3 × 28 = 84,
64/3 = 64 × 28/3 × 28 = 1792/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
1792/84 + 21/84 = 1792 + 21/84 = 1813/84 - 1813/84 simplified gives 259/12
- So, 64/3 + 21/84 = 259/12
In mixed form: 217/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/3+42/84 64/6+21/84 64/3+63/84 64/9+21/84 64/15+21/84 64/21+21/84