Add 80/42 and 42/12
1st number: 1 38/42, 2nd number: 3 6/12
80/42 + 42/12 is 227/42.
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,
42/12 = 42 × 7/12 × 7 = 294/84 - Add the two like fractions:
160/84 + 294/84 = 160 + 294/84 = 454/84 - 454/84 simplified gives 227/42
- So, 80/42 + 42/12 = 227/42
In mixed form: 517/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+84/12 80/84+42/12 80/42+42/24 80/42+42/36 80/42+42/60 80/42+42/84