Subtract 21/63 from 90/8
1st number: 11 2/8, 2nd number: 21/63
90/8 - 21/63 is 131/12.
Steps for subtracting 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,
90/8 = 90 × 63/8 × 63 = 5670/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504 - Subtract the two like fractions:
5670/504 - 168/504 = 5670 - 168/504 = 5502/504 - After reducing the fraction, the answer is 131/12
- In mixed form: 1011/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8-42/63 90/16-21/63 90/24-21/63 90/40-21/63 90/56-21/63