Subtract 9/25 from 1/81
1/81 - 9/25 is -704/2025.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 25 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 81 × 25 = 2025,
1/81 = 1 × 25/81 × 25 = 25/2025 - Likewise, for the 2nd fraction, since 25 × 81 = 2025,
9/25 = 9 × 81/25 × 81 = 729/2025 - Subtract the two like fractions:
25/2025 - 729/2025 = 25 - 729/2025 = -704/2025
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/81-9/25 1/81-18/25 1/81-9/50 3/81-9/25 1/81-27/25 1/81-9/75 5/81-9/25 1/81-45/25 7/81-9/25 1/81-63/25