Subtract 9/25 from 5/81
5/81 - 9/25 is -604/2025.
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,
5/81 = 5 × 25/81 × 25 = 125/2025 - Likewise, for the 2nd fraction, since 25 × 81 = 2025,
9/25 = 9 × 81/25 × 81 = 729/2025 - Subtract the two like fractions:
125/2025 - 729/2025 = 125 - 729/2025 = -604/2025
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/81-9/25 5/81-18/25 5/81-9/50 15/81-9/25 5/81-27/25 5/81-9/75 25/81-9/25 5/81-45/25 35/81-9/25 5/81-63/25