Add 21/9 and 27/10
1st number: 2 3/9, 2nd number: 2 7/10
21/9 + 27/10 is 151/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 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 10 × 9 = 90,
27/10 = 27 × 9/10 × 9 = 243/90 - Add the two like fractions:
210/90 + 243/90 = 210 + 243/90 = 453/90 - 453/90 simplified gives 151/30
- So, 21/9 + 27/10 = 151/30
In mixed form: 51/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+27/10 21/9+54/10 21/18+27/10 21/9+27/20 63/9+27/10 21/9+81/10 21/27+27/10 21/9+27/30 21/45+27/10 21/9+27/50 21/63+27/10 21/9+27/70