Add 84/3 and 50/21
1st number: 28 0/3, 2nd number: 2 8/21
84/3 + 50/21 is 638/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
84/3 = 84 × 7/3 × 7 = 588/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
50/21 = 50 × 1/21 × 1 = 50/21 - Add the two like fractions:
588/21 + 50/21 = 588 + 50/21 = 638/21 - So, 84/3 + 50/21 = 638/21
In mixed form: 308/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6+50/21 84/3+50/42 84/9+50/21 84/3+50/63 84/15+50/21 84/21+50/21