Add 30/12 and 15/30
1st number: 2 6/12, 2nd number: 15/30
30/12 + 15/30 is 3/1.
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,
30/12 = 30 × 5/12 × 5 = 150/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
15/30 = 15 × 2/30 × 2 = 30/60 - Add the two like fractions:
150/60 + 30/60 = 150 + 30/60 = 180/60 - 180/60 simplified gives 3/1
- So, 30/12 + 15/30 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12+15/30 30/24+15/30 30/12+15/60 90/12+15/30 30/12+45/30 30/36+15/30 30/12+15/90 30/12+75/30 30/60+15/30 30/84+15/30