Subtract 6/81 from 84/40
1st number: 2 4/40, 2nd number: 6/81
84/40 - 6/81 is 547/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
84/40 = 84 × 81/40 × 81 = 6804/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
6/81 = 6 × 40/81 × 40 = 240/3240 - Subtract the two like fractions:
6804/3240 - 240/3240 = 6804 - 240/3240 = 6564/3240 - After reducing the fraction, the answer is 547/270
- In mixed form: 27/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-12/81 84/80-6/81 84/40-18/81 84/40-30/81 84/40-42/81