Add 42/12 and 1/15
1st number: 3 6/12, 2nd number: 1/15
42/12 + 1/15 is 107/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
1/15 = 1 × 4/15 × 4 = 4/60 - Add the two like fractions:
210/60 + 4/60 = 210 + 4/60 = 214/60 - 214/60 simplified gives 107/30
- So, 42/12 + 1/15 = 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: 84/12+1/15 42/12+2/15 42/24+1/15 42/12+1/30 42/12+3/15 42/36+1/15 42/12+1/45 42/12+5/15 42/60+1/15 42/12+1/75 42/12+7/15 42/84+1/15