Add 80/42 and 7/12
1st number: 1 38/42, 2nd number: 7/12
80/42 + 7/12 is 209/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
80/42 = 80 × 2/42 × 2 = 160/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
7/12 = 7 × 7/12 × 7 = 49/84 - Add the two like fractions:
160/84 + 49/84 = 160 + 49/84 = 209/84 - So, 80/42 + 7/12 = 209/84
In mixed form: 241/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+14/12 80/84+7/12 80/42+7/24 80/42+21/12 80/42+7/36 80/42+35/12 80/42+7/60 80/42+49/12 80/42+7/84