Add 21/24 and 18/8
1st number: 21/24, 2nd number: 2 2/8
21/24 + 18/8 is 25/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
21/24 = 21 × 1/24 × 1 = 21/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
18/8 = 18 × 3/8 × 3 = 54/24 - Add the two like fractions:
21/24 + 54/24 = 21 + 54/24 = 75/24 - 75/24 simplified gives 25/8
- So, 21/24 + 18/8 = 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: 42/24+18/8 21/24+36/8 21/48+18/8 21/24+18/16 63/24+18/8 21/24+54/8 21/72+18/8 21/24+18/24 21/24+90/8 21/24+18/40 21/24+18/56