Subtract 70/81 from 16/75
16/75 - 70/81 is -1318/2025.
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,
16/75 = 16 × 27/75 × 27 = 432/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
70/81 = 70 × 25/81 × 25 = 1750/2025 - Subtract the two like fractions:
432/2025 - 1750/2025 = 432 - 1750/2025 = -1318/2025
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/75-70/81 48/75-70/81 80/75-70/81