Add 42/15 and 42/12
1st number: 2 12/15, 2nd number: 3 6/12
42/15 + 42/12 is 63/10.
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,
42/15 = 42 × 4/15 × 4 = 168/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Add the two like fractions:
168/60 + 210/60 = 168 + 210/60 = 378/60 - 378/60 simplified gives 63/10
- So, 42/15 + 42/12 = 63/10
In mixed form: 63/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+42/12 42/15+84/12 42/30+42/12 42/15+42/24 42/45+42/12 42/15+42/36 42/75+42/12 42/15+42/60 42/15+42/84