Add 30/18 and 3/20
1st number: 1 12/18, 2nd number: 3/20
30/18 + 3/20 is 109/60.
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,
30/18 = 30 × 10/18 × 10 = 300/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
3/20 = 3 × 9/20 × 9 = 27/180 - Add the two like fractions:
300/180 + 27/180 = 300 + 27/180 = 327/180 - 327/180 simplified gives 109/60
- So, 30/18 + 3/20 = 109/60
In mixed form: 149/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+3/20 30/18+6/20 30/36+3/20 30/18+3/40 90/18+3/20 30/18+9/20 30/54+3/20 30/18+3/60 30/18+15/20 30/90+3/20 30/18+21/20