Subtract 50/81 from 2/4
2/4 - 50/81 is -19/162.
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,
2/4 = 2 × 81/4 × 81 = 162/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
50/81 = 50 × 4/81 × 4 = 200/324 - Subtract the two like fractions:
162/324 - 200/324 = 162 - 200/324 = -38/324 - After reducing the fraction, the answer is -19/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/8-50/81 6/4-50/81 2/12-50/81 10/4-50/81 2/20-50/81 14/4-50/81 2/28-50/81