Add 12/3 and 14/21
1st number: 4 0/3, 2nd number: 14/21
12/3 + 14/21 is 14/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 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 21 × 1 = 21,
14/21 = 14 × 1/21 × 1 = 14/21 - Add the two like fractions:
84/21 + 14/21 = 84 + 14/21 = 98/21 - 98/21 simplified gives 14/3
- So, 12/3 + 14/21 = 14/3
In mixed form: 42/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/3+14/21 12/3+28/21 12/6+14/21 12/3+14/42 36/3+14/21 12/3+42/21 12/9+14/21 12/3+14/63 60/3+14/21 12/3+70/21 12/15+14/21 84/3+14/21 12/3+98/21 12/21+14/21