Add 6/12 and 21/8
1st number: 6/12, 2nd number: 2 5/8
6/12 + 21/8 is 25/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
6/12 = 6 × 2/12 × 2 = 12/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
21/8 = 21 × 3/8 × 3 = 63/24 - Add the two like fractions:
12/24 + 63/24 = 12 + 63/24 = 75/24 - 75/24 simplified gives 25/8
- So, 6/12 + 21/8 = 25/8
In mixed form: 31/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12+42/8 6/24+21/8 6/12+21/16 18/12+21/8 6/12+63/8 6/36+21/8 6/12+21/24 30/12+21/8 6/60+21/8 6/12+21/40 42/12+21/8 6/84+21/8 6/12+21/56