Add 6/4 and 21/15
1st number: 1 2/4, 2nd number: 1 6/15
6/4 + 21/15 is 29/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
6/4 = 6 × 15/4 × 15 = 90/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
21/15 = 21 × 4/15 × 4 = 84/60 - Add the two like fractions:
90/60 + 84/60 = 90 + 84/60 = 174/60 - 174/60 simplified gives 29/10
- So, 6/4 + 21/15 = 29/10
In mixed form: 29/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/4+21/15 6/4+42/15 6/8+21/15 6/4+21/30 18/4+21/15 6/4+63/15 6/12+21/15 6/4+21/45 30/4+21/15 6/20+21/15 6/4+21/75 42/4+21/15 6/28+21/15