Add 12/3 and 80/7
1st number: 4 0/3, 2nd number: 11 3/7
12/3 + 80/7 is 108/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
12/3 = 12 × 7/3 × 7 = 84/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
80/7 = 80 × 3/7 × 3 = 240/21 - Add the two like fractions:
84/21 + 240/21 = 84 + 240/21 = 324/21 - 324/21 simplified gives 108/7
- So, 12/3 + 80/7 = 108/7
In mixed form: 153/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3+80/7 12/6+80/7 12/3+80/14 36/3+80/7 12/9+80/7 12/3+80/21 60/3+80/7 12/15+80/7 12/3+80/35 84/3+80/7 12/21+80/7 12/3+80/49