Subtract 3/25 from 21/15
1st number: 1 6/15, 2nd number: 3/25
21/15 - 3/25 is 32/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 25 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 15 × 5 = 75,
21/15 = 21 × 5/15 × 5 = 105/75 - Likewise, for the 2nd fraction, since 25 × 3 = 75,
3/25 = 3 × 3/25 × 3 = 9/75 - Subtract the two like fractions:
105/75 - 9/75 = 105 - 9/75 = 96/75 - After reducing the fraction, the answer is 32/25
- In mixed form: 17/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/15-3/25 21/15-6/25 21/30-3/25 21/15-3/50 63/15-3/25 21/15-9/25 21/45-3/25 21/15-3/75 21/15-15/25 21/75-3/25 21/15-21/25