Subtract 10/25 from 21/75
21/75 - 10/25 is -3/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 25 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 75 × 1 = 75,
21/75 = 21 × 1/75 × 1 = 21/75 - Likewise, for the 2nd fraction, since 25 × 3 = 75,
10/25 = 10 × 3/25 × 3 = 30/75 - Subtract the two like fractions:
21/75 - 30/75 = 21 - 30/75 = -9/75 - After reducing the fraction, the answer is -3/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75-10/25 21/75-20/25 21/75-10/50 63/75-10/25 21/75-30/25 21/75-10/75 21/75-50/25 21/75-70/25