Add 6/4 and 9/21
1st number: 1 2/4, 2nd number: 9/21
6/4 + 9/21 is 27/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
6/4 = 6 × 21/4 × 21 = 126/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
9/21 = 9 × 4/21 × 4 = 36/84 - Add the two like fractions:
126/84 + 36/84 = 126 + 36/84 = 162/84 - 162/84 simplified gives 27/14
- So, 6/4 + 9/21 = 27/14
In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/4+9/21 6/4+18/21 6/8+9/21 6/4+9/42 18/4+9/21 6/4+27/21 6/12+9/21 6/4+9/63 30/4+9/21 6/4+45/21 6/20+9/21 42/4+9/21 6/4+63/21 6/28+9/21