Add 27/30 and 21/9
1st number: 27/30, 2nd number: 2 3/9
27/30 + 21/9 is 97/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
27/30 = 27 × 3/30 × 3 = 81/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Add the two like fractions:
81/90 + 210/90 = 81 + 210/90 = 291/90 - 291/90 simplified gives 97/30
- So, 27/30 + 21/9 = 97/30
In mixed form: 37/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+21/9 27/30+42/9 27/60+21/9 27/30+21/18 81/30+21/9 27/30+63/9 27/90+21/9 27/30+21/27 27/30+21/45 27/30+21/63