Subtract 21/63 from 3/25
3/25 - 21/63 is -16/75.
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,
3/25 = 3 × 63/25 × 63 = 189/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
21/63 = 21 × 25/63 × 25 = 525/1575 - Subtract the two like fractions:
189/1575 - 525/1575 = 189 - 525/1575 = -336/1575 - After reducing the fraction, the answer is -16/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/25-21/63 3/25-42/63 3/50-21/63 9/25-21/63 3/75-21/63 15/25-21/63 21/25-21/63