Add 21/8 and 3/63
1st number: 2 5/8, 2nd number: 3/63
21/8 + 3/63 is 449/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 8 × 63 = 504,
21/8 = 21 × 63/8 × 63 = 1323/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
3/63 = 3 × 8/63 × 8 = 24/504 - Add the two like fractions:
1323/504 + 24/504 = 1323 + 24/504 = 1347/504 - 1347/504 simplified gives 449/168
- So, 21/8 + 3/63 = 449/168
In mixed form: 2113/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/8+3/63 21/8+6/63 21/16+3/63 63/8+3/63 21/8+9/63 21/24+3/63 21/8+15/63 21/40+3/63 21/8+21/63 21/56+3/63