Add 2/15 and 81/30
1st number: 2/15, 2nd number: 2 21/30
2/15 + 81/30 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
2/15 = 2 × 2/15 × 2 = 4/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Add the two like fractions:
4/30 + 81/30 = 4 + 81/30 = 85/30 - 85/30 simplified gives 17/6
- So, 2/15 + 81/30 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/15+81/30 2/30+81/30 2/15+81/60 6/15+81/30 2/45+81/30 2/15+81/90 10/15+81/30 2/75+81/30 14/15+81/30