Add 5/4 and 6/21
1st number: 1 1/4, 2nd number: 6/21
5/4 + 6/21 is 43/28.
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,
5/4 = 5 × 21/4 × 21 = 105/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
6/21 = 6 × 4/21 × 4 = 24/84 - Add the two like fractions:
105/84 + 24/84 = 105 + 24/84 = 129/84 - 129/84 simplified gives 43/28
- So, 5/4 + 6/21 = 43/28
In mixed form: 115/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+6/21 5/4+12/21 5/8+6/21 5/4+6/42 15/4+6/21 5/4+18/21 5/12+6/21 5/4+6/63 25/4+6/21 5/4+30/21 5/20+6/21 35/4+6/21 5/4+42/21 5/28+6/21