Add 20/18 and 3/9
1st number: 1 2/18, 2nd number: 3/9
20/18 + 3/9 is 13/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
20/18 = 20 × 1/18 × 1 = 20/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
3/9 = 3 × 2/9 × 2 = 6/18 - Add the two like fractions:
20/18 + 6/18 = 20 + 6/18 = 26/18 - 26/18 simplified gives 13/9
- So, 20/18 + 3/9 = 13/9
In mixed form: 14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+3/9 20/18+6/9 20/36+3/9 20/18+3/18 60/18+3/9 20/54+3/9 20/18+3/27 20/18+15/9 20/90+3/9 20/18+3/45 20/18+21/9 20/18+3/63