Add 30/9 and 75/12
1st number: 3 3/9, 2nd number: 6 3/12
30/9 + 75/12 is 115/12.
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,
30/9 = 30 × 4/9 × 4 = 120/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
75/12 = 75 × 3/12 × 3 = 225/36 - Add the two like fractions:
120/36 + 225/36 = 120 + 225/36 = 345/36 - 345/36 simplified gives 115/12
- So, 30/9 + 75/12 = 115/12
In mixed form: 97/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9+75/12 30/18+75/12 30/9+75/24 90/9+75/12 30/27+75/12 30/9+75/36 30/45+75/12 30/9+75/60 30/63+75/12 30/9+75/84