Add 1/21 and 6/4
1st number: 1/21, 2nd number: 1 2/4
1/21 + 6/4 is 65/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
1/21 = 1 × 4/21 × 4 = 4/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
6/4 = 6 × 21/4 × 21 = 126/84 - Add the two like fractions:
4/84 + 126/84 = 4 + 126/84 = 130/84 - 130/84 simplified gives 65/42
- So, 1/21 + 6/4 = 65/42
In mixed form: 123/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+6/4 1/21+12/4 1/42+6/4 1/21+6/8 3/21+6/4 1/21+18/4 1/63+6/4 1/21+6/12 5/21+6/4 1/21+30/4 1/21+6/20 7/21+6/4 1/21+42/4 1/21+6/28