Add 5/15 and 7/10
5/15 + 7/10 is 31/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
5/15 = 5 × 2/15 × 2 = 10/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
7/10 = 7 × 3/10 × 3 = 21/30 - Add the two like fractions:
10/30 + 21/30 = 10 + 21/30 = 31/30 - So, 5/15 + 7/10 = 31/30
In mixed form: 11/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+7/10 5/15+14/10 5/30+7/10 5/15+7/20 5/15+21/10 5/45+7/10 5/15+7/30 25/15+7/10 5/15+35/10 5/75+7/10 5/15+7/50 35/15+7/10 5/15+49/10 5/15+7/70