Add 2/9 and 81/20
1st number: 2/9, 2nd number: 4 1/20
2/9 + 81/20 is 769/180.
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,
2/9 = 2 × 20/9 × 20 = 40/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
81/20 = 81 × 9/20 × 9 = 729/180 - Add the two like fractions:
40/180 + 729/180 = 40 + 729/180 = 769/180 - So, 2/9 + 81/20 = 769/180
In mixed form: 449/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/9+81/20 2/18+81/20 2/9+81/40 6/9+81/20 2/27+81/20 2/9+81/60 10/9+81/20 2/45+81/20 14/9+81/20 2/63+81/20