Add 75/63 and 21/8
1st number: 1 12/63, 2nd number: 2 5/8
75/63 + 21/8 is 641/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 8 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
75/63 = 75 × 8/63 × 8 = 600/504 - Likewise, for the 2nd fraction, since 8 × 63 = 504,
21/8 = 21 × 63/8 × 63 = 1323/504 - Add the two like fractions:
600/504 + 1323/504 = 600 + 1323/504 = 1923/504 - 1923/504 simplified gives 641/168
- So, 75/63 + 21/8 = 641/168
In mixed form: 3137/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/63+42/8 75/63+21/16 75/63+63/8 75/63+21/24 75/63+21/40 75/63+21/56