Add 21/15 and 14/5
1st number: 1 6/15, 2nd number: 2 4/5
21/15 + 14/5 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
21/15 = 21 × 1/15 × 1 = 21/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
14/5 = 14 × 3/5 × 3 = 42/15 - Add the two like fractions:
21/15 + 42/15 = 21 + 42/15 = 63/15 - 63/15 simplified gives 21/5
- So, 21/15 + 14/5 = 21/5
In mixed form: 41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15+14/5 21/15+28/5 21/30+14/5 21/15+14/10 63/15+14/5 21/15+42/5 21/45+14/5 21/15+14/15 21/15+70/5 21/75+14/5 21/15+14/25 21/15+98/5 21/15+14/35