Add 3/18 and 42/12
1st number: 3/18, 2nd number: 3 6/12
3/18 + 42/12 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
3/18 = 3 × 2/18 × 2 = 6/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
42/12 = 42 × 3/12 × 3 = 126/36 - Add the two like fractions:
6/36 + 126/36 = 6 + 126/36 = 132/36 - 132/36 simplified gives 11/3
- So, 3/18 + 42/12 = 11/3
In mixed form: 32/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+42/12 3/18+84/12 3/36+42/12 3/18+42/24 9/18+42/12 3/54+42/12 3/18+42/36 15/18+42/12 3/90+42/12 3/18+42/60 21/18+42/12 3/18+42/84