Add 21/6 and 18/8
1st number: 3 3/6, 2nd number: 2 2/8
21/6 + 18/8 is 23/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 6 × 4 = 24,
21/6 = 21 × 4/6 × 4 = 84/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
18/8 = 18 × 3/8 × 3 = 54/24 - Add the two like fractions:
84/24 + 54/24 = 84 + 54/24 = 138/24 - 138/24 simplified gives 23/4
- So, 21/6 + 18/8 = 23/4
In mixed form: 53/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+18/8 21/6+36/8 21/12+18/8 21/6+18/16 63/6+18/8 21/6+54/8 21/18+18/8 21/6+18/24 21/6+90/8 21/30+18/8 21/6+18/40 21/42+18/8 21/6+18/56