Add 1/21 and 14/12
1st number: 1/21, 2nd number: 1 2/12
1/21 + 14/12 is 17/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
1/21 = 1 × 4/21 × 4 = 4/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
14/12 = 14 × 7/12 × 7 = 98/84 - Add the two like fractions:
4/84 + 98/84 = 4 + 98/84 = 102/84 - 102/84 simplified gives 17/14
- So, 1/21 + 14/12 = 17/14
In mixed form: 13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21+14/12 1/21+28/12 1/42+14/12 1/21+14/24 3/21+14/12 1/21+42/12 1/63+14/12 1/21+14/36 5/21+14/12 1/21+70/12 1/21+14/60 7/21+14/12 1/21+98/12 1/21+14/84