Add 1/21 and 21/6
1st number: 1/21, 2nd number: 3 3/6
1/21 + 21/6 is 149/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
1/21 = 1 × 2/21 × 2 = 2/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
21/6 = 21 × 7/6 × 7 = 147/42 - Add the two like fractions:
2/42 + 147/42 = 2 + 147/42 = 149/42 - So, 1/21 + 21/6 = 149/42
In mixed form: 323/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+21/6 1/21+42/6 1/42+21/6 1/21+21/12 3/21+21/6 1/21+63/6 1/63+21/6 1/21+21/18 5/21+21/6 1/21+21/30 7/21+21/6 1/21+21/42