Add 12/18 and 42/7
1st number: 12/18, 2nd number: 6 0/7
12/18 + 42/7 is 20/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
42/7 = 42 × 18/7 × 18 = 756/126 - Add the two like fractions:
84/126 + 756/126 = 84 + 756/126 = 840/126 - 840/126 simplified gives 20/3
- So, 12/18 + 42/7 = 20/3
In mixed form: 62/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+42/7 12/18+84/7 12/36+42/7 12/18+42/14 36/18+42/7 12/54+42/7 12/18+42/21 60/18+42/7 12/90+42/7 12/18+42/35 84/18+42/7 12/18+42/49