Add 84/3 and 21/30
1st number: 28 0/3, 2nd number: 21/30
84/3 + 21/30 is 287/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 3 × 10 = 30,
84/3 = 84 × 10/3 × 10 = 840/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Add the two like fractions:
840/30 + 21/30 = 840 + 21/30 = 861/30 - 861/30 simplified gives 287/10
- So, 84/3 + 21/30 = 287/10
In mixed form: 287/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/3+42/30 84/6+21/30 84/3+21/60 84/3+63/30 84/9+21/30 84/3+21/90 84/15+21/30 84/21+21/30