Add 7/9 and 15/30
7/9 + 15/30 is 23/18.
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,
7/9 = 7 × 10/9 × 10 = 70/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
15/30 = 15 × 3/30 × 3 = 45/90 - Add the two like fractions:
70/90 + 45/90 = 70 + 45/90 = 115/90 - 115/90 simplified gives 23/18
- So, 7/9 + 15/30 = 23/18
In mixed form: 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9+15/30 7/18+15/30 7/9+15/60 21/9+15/30 7/9+45/30 7/27+15/30 7/9+15/90 35/9+15/30 7/9+75/30 7/45+15/30 49/9+15/30 7/63+15/30