Add 21/9 and 5/30
1st number: 2 3/9, 2nd number: 5/30
21/9 + 5/30 is 5/2.
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,
21/9 = 21 × 10/9 × 10 = 210/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
5/30 = 5 × 3/30 × 3 = 15/90 - Add the two like fractions:
210/90 + 15/90 = 210 + 15/90 = 225/90 - 225/90 simplified gives 5/2
- So, 21/9 + 5/30 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+5/30 21/9+10/30 21/18+5/30 21/9+5/60 63/9+5/30 21/9+15/30 21/27+5/30 21/9+5/90 21/9+25/30 21/45+5/30 21/9+35/30 21/63+5/30