Add 9/15 and 27/12
1st number: 9/15, 2nd number: 2 3/12
9/15 + 27/12 is 57/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
9/15 = 9 × 4/15 × 4 = 36/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
27/12 = 27 × 5/12 × 5 = 135/60 - Add the two like fractions:
36/60 + 135/60 = 36 + 135/60 = 171/60 - 171/60 simplified gives 57/20
- So, 9/15 + 27/12 = 57/20
In mixed form: 217/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+27/12 9/15+54/12 9/30+27/12 9/15+27/24 27/15+27/12 9/15+81/12 9/45+27/12 9/15+27/36 45/15+27/12 9/75+27/12 9/15+27/60 63/15+27/12 9/15+27/84