Add 42/9 and 6/12
1st number: 4 6/9, 2nd number: 6/12
42/9 + 6/12 is 31/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
42/9 = 42 × 4/9 × 4 = 168/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
6/12 = 6 × 3/12 × 3 = 18/36 - Add the two like fractions:
168/36 + 18/36 = 168 + 18/36 = 186/36 - 186/36 simplified gives 31/6
- So, 42/9 + 6/12 = 31/6
In mixed form: 51/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/9+6/12 42/18+6/12 42/9+6/24 42/9+18/12 42/27+6/12 42/9+6/36 42/9+30/12 42/45+6/12 42/9+6/60 42/9+42/12 42/63+6/12 42/9+6/84