Add 2/4 and 21/15
1st number: 2/4, 2nd number: 1 6/15
2/4 + 21/15 is 19/10.
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,
2/4 = 2 × 15/4 × 15 = 30/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
21/15 = 21 × 4/15 × 4 = 84/60 - Add the two like fractions:
30/60 + 84/60 = 30 + 84/60 = 114/60 - 114/60 simplified gives 19/10
- So, 2/4 + 21/15 = 19/10
In mixed form: 19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/4+42/15 2/8+21/15 2/4+21/30 6/4+21/15 2/4+63/15 2/12+21/15 2/4+21/45 10/4+21/15 2/20+21/15 2/4+21/75 14/4+21/15 2/28+21/15