Add 2/12 and 27/21
1st number: 2/12, 2nd number: 1 6/21
2/12 + 27/21 is 61/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
2/12 = 2 × 7/12 × 7 = 14/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
27/21 = 27 × 4/21 × 4 = 108/84 - Add the two like fractions:
14/84 + 108/84 = 14 + 108/84 = 122/84 - 122/84 simplified gives 61/42
- So, 2/12 + 27/21 = 61/42
In mixed form: 119/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/12+27/21 2/12+54/21 2/24+27/21 2/12+27/42 6/12+27/21 2/12+81/21 2/36+27/21 2/12+27/63 10/12+27/21 2/60+27/21 14/12+27/21 2/84+27/21