Subtract 8/81 from 7/25
7/25 - 8/81 is 367/2025.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 25 × 81 = 2025,
7/25 = 7 × 81/25 × 81 = 567/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
8/81 = 8 × 25/81 × 25 = 200/2025 - Subtract the two like fractions:
567/2025 - 200/2025 = 567 - 200/2025 = 367/2025
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/25-8/81 7/25-16/81 7/50-8/81 21/25-8/81 7/25-24/81 7/75-8/81 35/25-8/81 7/25-40/81 49/25-8/81 7/25-56/81