Subtract 6/4 from 3/81
1st number: 3/81, 2nd number: 1 2/4
3/81 - 6/4 is -79/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
3/81 = 3 × 4/81 × 4 = 12/324 - Likewise, for the 2nd fraction, since 4 × 81 = 324,
6/4 = 6 × 81/4 × 81 = 486/324 - Subtract the two like fractions:
12/324 - 486/324 = 12 - 486/324 = -474/324 - After reducing the fraction, the answer is -79/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/81-6/4 3/81-12/4 3/81-6/8 9/81-6/4 3/81-18/4 3/81-6/12 15/81-6/4 3/81-30/4 3/81-6/20 21/81-6/4 3/81-42/4 3/81-6/28