Subtract 30/81 from 4/75
4/75 - 30/81 is -214/675.
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,
4/75 = 4 × 27/75 × 27 = 108/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
30/81 = 30 × 25/81 × 25 = 750/2025 - Subtract the two like fractions:
108/2025 - 750/2025 = 108 - 750/2025 = -642/2025 - After reducing the fraction, the answer is -214/675
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/75-30/81 4/75-60/81 12/75-30/81 4/75-90/81 20/75-30/81 28/75-30/81