Add 3/9 and 30/12
1st number: 3/9, 2nd number: 2 6/12
3/9 + 30/12 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
3/9 = 3 × 4/9 × 4 = 12/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
30/12 = 30 × 3/12 × 3 = 90/36 - Add the two like fractions:
12/36 + 90/36 = 12 + 90/36 = 102/36 - 102/36 simplified gives 17/6
- So, 3/9 + 30/12 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9+30/12 3/9+60/12 3/18+30/12 3/9+30/24 3/9+90/12 3/27+30/12 3/9+30/36 15/9+30/12 3/45+30/12 3/9+30/60 21/9+30/12 3/63+30/12 3/9+30/84