Add 9/15 and 15/10
1st number: 9/15, 2nd number: 1 5/10
9/15 + 15/10 is 21/10.
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,
9/15 = 9 × 2/15 × 2 = 18/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
15/10 = 15 × 3/10 × 3 = 45/30 - Add the two like fractions:
18/30 + 45/30 = 18 + 45/30 = 63/30 - 63/30 simplified gives 21/10
- So, 9/15 + 15/10 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+15/10 9/15+30/10 9/30+15/10 9/15+15/20 27/15+15/10 9/15+45/10 9/45+15/10 9/15+15/30 45/15+15/10 9/15+75/10 9/75+15/10 9/15+15/50 63/15+15/10 9/15+15/70