Add 3/12 and 30/9
1st number: 3/12, 2nd number: 3 3/9
3/12 + 30/9 is 43/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
3/12 = 3 × 3/12 × 3 = 9/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
30/9 = 30 × 4/9 × 4 = 120/36 - Add the two like fractions:
9/36 + 120/36 = 9 + 120/36 = 129/36 - 129/36 simplified gives 43/12
- So, 3/12 + 30/9 = 43/12
In mixed form: 37/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+30/9 3/12+60/9 3/24+30/9 3/12+30/18 9/12+30/9 3/12+90/9 3/36+30/9 3/12+30/27 15/12+30/9 3/60+30/9 3/12+30/45 21/12+30/9 3/84+30/9 3/12+30/63