Add 5/9 and 9/20
5/9 + 9/20 is 181/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
5/9 = 5 × 20/9 × 20 = 100/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
100/180 + 81/180 = 100 + 81/180 = 181/180 - So, 5/9 + 9/20 = 181/180
In mixed form: 11/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9+9/20 5/9+18/20 5/18+9/20 5/9+9/40 15/9+9/20 5/9+27/20 5/27+9/20 5/9+9/60 25/9+9/20 5/9+45/20 5/45+9/20 35/9+9/20 5/9+63/20 5/63+9/20