Add 1/15 and 42/12
1st number: 1/15, 2nd number: 3 6/12
1/15 + 42/12 is 107/30.
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,
1/15 = 1 × 4/15 × 4 = 4/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Add the two like fractions:
4/60 + 210/60 = 4 + 210/60 = 214/60 - 214/60 simplified gives 107/30
- So, 1/15 + 42/12 = 107/30
In mixed form: 317/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15+42/12 1/15+84/12 1/30+42/12 1/15+42/24 3/15+42/12 1/45+42/12 1/15+42/36 5/15+42/12 1/75+42/12 1/15+42/60 7/15+42/12 1/15+42/84