Add 28/9 and 28/20
1st number: 3 1/9, 2nd number: 1 8/20
28/9 + 28/20 is 203/45.
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,
28/9 = 28 × 20/9 × 20 = 560/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
28/20 = 28 × 9/20 × 9 = 252/180 - Add the two like fractions:
560/180 + 252/180 = 560 + 252/180 = 812/180 - 812/180 simplified gives 203/45
- So, 28/9 + 28/20 = 203/45
In mixed form: 423/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/9+28/20 28/9+56/20 28/18+28/20 28/9+28/40 84/9+28/20 28/9+84/20 28/27+28/20 28/9+28/60 28/45+28/20 28/63+28/20