Add 12/21 and 27/24
1st number: 12/21, 2nd number: 1 3/24
12/21 + 27/24 is 95/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
12/21 = 12 × 8/21 × 8 = 96/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
27/24 = 27 × 7/24 × 7 = 189/168 - Add the two like fractions:
96/168 + 189/168 = 96 + 189/168 = 285/168 - 285/168 simplified gives 95/56
- So, 12/21 + 27/24 = 95/56
In mixed form: 139/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+27/24 12/21+54/24 12/42+27/24 12/21+27/48 36/21+27/24 12/21+81/24 12/63+27/24 12/21+27/72 60/21+27/24 84/21+27/24