Add 5/18 and 21/10
1st number: 5/18, 2nd number: 2 1/10
5/18 + 21/10 is 107/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
5/18 = 5 × 5/18 × 5 = 25/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
25/90 + 189/90 = 25 + 189/90 = 214/90 - 214/90 simplified gives 107/45
- So, 5/18 + 21/10 = 107/45
In mixed form: 217/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/18+21/10 5/18+42/10 5/36+21/10 5/18+21/20 15/18+21/10 5/18+63/10 5/54+21/10 5/18+21/30 25/18+21/10 5/90+21/10 5/18+21/50 35/18+21/10 5/18+21/70