Subtract 21/63 from 30/25
1st number: 1 5/25, 2nd number: 21/63
30/25 - 21/63 is 13/15.
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,
30/25 = 30 × 63/25 × 63 = 1890/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
21/63 = 21 × 25/63 × 25 = 525/1575 - Subtract the two like fractions:
1890/1575 - 525/1575 = 1890 - 525/1575 = 1365/1575 - After reducing the fraction, the answer is 13/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/25-21/63 30/25-42/63 30/50-21/63 90/25-21/63 30/75-21/63