Add 28/9 and 15/30
1st number: 3 1/9, 2nd number: 15/30
28/9 + 15/30 is 65/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
28/9 = 28 × 10/9 × 10 = 280/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
15/30 = 15 × 3/30 × 3 = 45/90 - Add the two like fractions:
280/90 + 45/90 = 280 + 45/90 = 325/90 - 325/90 simplified gives 65/18
- So, 28/9 + 15/30 = 65/18
In mixed form: 311/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/9+15/30 28/18+15/30 28/9+15/60 84/9+15/30 28/9+45/30 28/27+15/30 28/9+15/90 28/9+75/30 28/45+15/30 28/63+15/30