Subtract 10/81 from 25/4
1st number: 6 1/4, 2nd number: 10/81
25/4 - 10/81 is 1985/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
25/4 = 25 × 81/4 × 81 = 2025/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
10/81 = 10 × 4/81 × 4 = 40/324 - Subtract the two like fractions:
2025/324 - 40/324 = 2025 - 40/324 = 1985/324 - In mixed form: 641/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/4-10/81 25/4-20/81 25/8-10/81 75/4-10/81 25/4-30/81 25/12-10/81 25/4-50/81 25/20-10/81 25/4-70/81 25/28-10/81