Add 3/12 and 18/30
3/12 + 18/30 is 17/20.
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,
3/12 = 3 × 5/12 × 5 = 15/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
18/30 = 18 × 2/30 × 2 = 36/60 - Add the two like fractions:
15/60 + 36/60 = 15 + 36/60 = 51/60 - 51/60 simplified gives 17/20
- So, 3/12 + 18/30 = 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+18/30 3/12+36/30 3/24+18/30 3/12+18/60 9/12+18/30 3/12+54/30 3/36+18/30 3/12+18/90 15/12+18/30 3/12+90/30 3/60+18/30 21/12+18/30 3/84+18/30