Subtract 84/81 from 8/75
1st number: 8/75, 2nd number: 1 3/81
8/75 - 84/81 is -628/675.
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,
8/75 = 8 × 27/75 × 27 = 216/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
84/81 = 84 × 25/81 × 25 = 2100/2025 - Subtract the two like fractions:
216/2025 - 2100/2025 = 216 - 2100/2025 = -1884/2025 - After reducing the fraction, the answer is -628/675
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/75-84/81 24/75-84/81 40/75-84/81 56/75-84/81