Add 8/12 and 42/7
1st number: 8/12, 2nd number: 6 0/7
8/12 + 42/7 is 20/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
42/7 = 42 × 12/7 × 12 = 504/84 - Add the two like fractions:
56/84 + 504/84 = 56 + 504/84 = 560/84 - 560/84 simplified gives 20/3
- So, 8/12 + 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: 16/12+42/7 8/12+84/7 8/24+42/7 8/12+42/14 24/12+42/7 8/36+42/7 8/12+42/21 40/12+42/7 8/60+42/7 8/12+42/35 56/12+42/7 8/84+42/7 8/12+42/49