Add 18/15 and 6/12
1st number: 1 3/15, 2nd number: 6/12
18/15 + 6/12 is 17/10.
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,
18/15 = 18 × 4/15 × 4 = 72/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
6/12 = 6 × 5/12 × 5 = 30/60 - Add the two like fractions:
72/60 + 30/60 = 72 + 30/60 = 102/60 - 102/60 simplified gives 17/10
- So, 18/15 + 6/12 = 17/10
In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+6/12 18/30+6/12 18/15+6/24 54/15+6/12 18/15+18/12 18/45+6/12 18/15+6/36 90/15+6/12 18/15+30/12 18/75+6/12 18/15+6/60 18/15+42/12 18/15+6/84