Subtract 70/81 from 1/25
1/25 - 70/81 is -1669/2025.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 25 × 81 = 2025,
1/25 = 1 × 81/25 × 81 = 81/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
70/81 = 70 × 25/81 × 25 = 1750/2025 - Subtract the two like fractions:
81/2025 - 1750/2025 = 81 - 1750/2025 = -1669/2025
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/25-70/81 1/50-70/81 3/25-70/81 1/75-70/81 5/25-70/81 7/25-70/81