Add 21/6 and 9/15
1st number: 3 3/6, 2nd number: 9/15
21/6 + 9/15 is 41/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
9/15 = 9 × 2/15 × 2 = 18/30 - Add the two like fractions:
105/30 + 18/30 = 105 + 18/30 = 123/30 - 123/30 simplified gives 41/10
- So, 21/6 + 9/15 = 41/10
In mixed form: 41/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+9/15 21/6+18/15 21/12+9/15 21/6+9/30 63/6+9/15 21/6+27/15 21/18+9/15 21/6+9/45 21/6+45/15 21/30+9/15 21/6+9/75 21/6+63/15 21/42+9/15