Add 20/3 and 9/21
1st number: 6 2/3, 2nd number: 9/21
203 + 921 is 14921.
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,
203 = 20 × 73 × 7 = 14021 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
921 = 9 × 121 × 1 = 921 - Add the two like fractions:
14021 + 921 = 140 + 921 = 14921 - So, 20/3 + 9/21 = 149/21
In mixed form: 7221
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3+9/21 20/3+18/21 20/6+9/21 20/3+9/42 60/3+9/21 20/3+27/21 20/9+9/21 20/3+9/63 20/3+45/21 20/15+9/21 20/3+63/21 20/21+9/21