Add 15/12 and 18/30
1st number: 1 3/12, 2nd number: 18/30
15/12 + 18/30 is 37/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
15/12 = 15 × 5/12 × 5 = 75/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
18/30 = 18 × 2/30 × 2 = 36/60 - Add the two like fractions:
75/60 + 36/60 = 75 + 36/60 = 111/60 - 111/60 simplified gives 37/20
- So, 15/12 + 18/30 = 37/20
In mixed form: 117/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+18/30 15/12+36/30 15/24+18/30 15/12+18/60 45/12+18/30 15/12+54/30 15/36+18/30 15/12+18/90 75/12+18/30 15/12+90/30 15/60+18/30 15/84+18/30