Subtract 32/25 from 15/21
1st number: 15/21, 2nd number: 1 7/25
15/21 - 32/25 is -99/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
15/21 = 15 × 25/21 × 25 = 375/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
32/25 = 32 × 21/25 × 21 = 672/525 - Subtract the two like fractions:
375/525 - 672/525 = 375 - 672/525 = -297/525 - After reducing the fraction, the answer is -99/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21-32/25 15/21-64/25 15/42-32/25 15/21-32/50 45/21-32/25 15/21-96/25 15/63-32/25 15/21-32/75 75/21-32/25