Add 3/18 and 28/20
1st number: 3/18, 2nd number: 1 8/20
3/18 + 28/20 is 47/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
3/18 = 3 × 10/18 × 10 = 30/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
28/20 = 28 × 9/20 × 9 = 252/180 - Add the two like fractions:
30/180 + 252/180 = 30 + 252/180 = 282/180 - 282/180 simplified gives 47/30
- So, 3/18 + 28/20 = 47/30
In mixed form: 117/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+28/20 3/18+56/20 3/36+28/20 3/18+28/40 9/18+28/20 3/18+84/20 3/54+28/20 3/18+28/60 15/18+28/20 3/90+28/20 21/18+28/20