Subtract 20/63 from 42/25
1st number: 1 17/25, 2nd number: 20/63
42/25 - 20/63 is 2146/1575.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 25 × 63 = 1575,
42/25 = 42 × 63/25 × 63 = 2646/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
20/63 = 20 × 25/63 × 25 = 500/1575 - Subtract the two like fractions:
2646/1575 - 500/1575 = 2646 - 500/1575 = 2146/1575 - In mixed form: 1571/1575
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25-20/63 42/25-40/63 42/50-20/63 42/25-60/63 42/75-20/63