Subtract 40/81 from 10/4
1st number: 2 2/4, 2nd number: 40/81
10/4 - 40/81 is 325/162.
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,
10/4 = 10 × 81/4 × 81 = 810/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
40/81 = 40 × 4/81 × 4 = 160/324 - Subtract the two like fractions:
810/324 - 160/324 = 810 - 160/324 = 650/324 - After reducing the fraction, the answer is 325/162
- In mixed form: 21/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/4-40/81 10/4-80/81 10/8-40/81 30/4-40/81 10/12-40/81 50/4-40/81 10/20-40/81 70/4-40/81 10/28-40/81