Add 3/12 and 9/5
1st number: 3/12, 2nd number: 1 4/5
3/12 + 9/5 is 41/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 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 5 × 12 = 60,
9/5 = 9 × 12/5 × 12 = 108/60 - Add the two like fractions:
15/60 + 108/60 = 15 + 108/60 = 123/60 - 123/60 simplified gives 41/20
- So, 3/12 + 9/5 = 41/20
In mixed form: 21/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+9/5 3/12+18/5 3/24+9/5 3/12+9/10 9/12+9/5 3/12+27/5 3/36+9/5 3/12+9/15 15/12+9/5 3/12+45/5 3/60+9/5 3/12+9/25 21/12+9/5 3/12+63/5 3/84+9/5 3/12+9/35