Add 30/12 and 18/20
1st number: 2 6/12, 2nd number: 18/20
30/12 + 18/20 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
18/20 = 18 × 3/20 × 3 = 54/60 - Add the two like fractions:
150/60 + 54/60 = 150 + 54/60 = 204/60 - 204/60 simplified gives 17/5
- So, 30/12 + 18/20 = 17/5
In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+18/20 30/12+36/20 30/24+18/20 30/12+18/40 90/12+18/20 30/12+54/20 30/36+18/20 30/12+18/60 30/12+90/20 30/60+18/20 30/84+18/20