Subtract 20/63 from 42/8
1st number: 5 2/8, 2nd number: 20/63
42/8 - 20/63 is 1243/252.
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,
42/8 = 42 × 63/8 × 63 = 2646/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
20/63 = 20 × 8/63 × 8 = 160/504 - Subtract the two like fractions:
2646/504 - 160/504 = 2646 - 160/504 = 2486/504 - After reducing the fraction, the answer is 1243/252
- In mixed form: 4235/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8-20/63 42/8-40/63 42/16-20/63 42/8-60/63 42/24-20/63 42/40-20/63 42/56-20/63