Add 21/24 and 63/4
1st number: 21/24, 2nd number: 15 3/4
21/24 + 63/4 is 133/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 4 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 4 × 6 = 24,
63/4 = 63 × 6/4 × 6 = 378/24 - Add the two like fractions:
21/24 + 378/24 = 21 + 378/24 = 399/24 - 399/24 simplified gives 133/8
- So, 21/24 + 63/4 = 133/8
In mixed form: 165/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+63/4 21/48+63/4 21/24+63/8 63/24+63/4 21/72+63/4 21/24+63/12 21/24+63/20 21/24+63/28