Add 6/9 and 21/30
6/9 + 21/30 is 41/30.
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,
6/9 = 6 × 10/9 × 10 = 60/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
21/30 = 21 × 3/30 × 3 = 63/90 - Add the two like fractions:
60/90 + 63/90 = 60 + 63/90 = 123/90 - 123/90 simplified gives 41/30
- So, 6/9 + 21/30 = 41/30
In mixed form: 111/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9+21/30 6/9+42/30 6/18+21/30 6/9+21/60 18/9+21/30 6/9+63/30 6/27+21/30 6/9+21/90 30/9+21/30 6/45+21/30 42/9+21/30 6/63+21/30