Subtract 25/63 from 2/21
2/21 - 25/63 is -19/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
2/21 = 2 × 3/21 × 3 = 6/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
25/63 = 25 × 1/63 × 1 = 25/63 - Subtract the two like fractions:
6/63 - 25/63 = 6 - 25/63 = -19/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-25/63 2/21-50/63 2/42-25/63 6/21-25/63 2/21-75/63 2/63-25/63 10/21-25/63 14/21-25/63