Subtract 49/81 from 27/75
27/75 - 49/81 is -496/2025.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 75 × 27 = 2025,
27/75 = 27 × 27/75 × 27 = 729/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
49/81 = 49 × 25/81 × 25 = 1225/2025 - Subtract the two like fractions:
729/2025 - 1225/2025 = 729 - 1225/2025 = -496/2025
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/75-49/81 27/75-98/81 81/75-49/81