Add 80/42 and 6/9
1st number: 1 38/42, 2nd number: 6/9
80/42 + 6/9 is 18/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
80/42 = 80 × 3/42 × 3 = 240/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
6/9 = 6 × 14/9 × 14 = 84/126 - Add the two like fractions:
240/126 + 84/126 = 240 + 84/126 = 324/126 - 324/126 simplified gives 18/7
- So, 80/42 + 6/9 = 18/7
In mixed form: 24/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+12/9 80/84+6/9 80/42+6/18 80/42+18/9 80/42+6/27 80/42+30/9 80/42+6/45 80/42+42/9 80/42+6/63