Subtract 7/81 from 36/75
36/75 - 7/81 is 797/2025.
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,
36/75 = 36 × 27/75 × 27 = 972/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
7/81 = 7 × 25/81 × 25 = 175/2025 - Subtract the two like fractions:
972/2025 - 175/2025 = 972 - 175/2025 = 797/2025
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/75-7/81 36/75-14/81 36/75-21/81 36/75-35/81 36/75-49/81