Subtract 84/81 from 18/6
1st number: 3 0/6, 2nd number: 1 3/81
18/6 - 84/81 is 53/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 6 × 27 = 162,
18/6 = 18 × 27/6 × 27 = 486/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
84/81 = 84 × 2/81 × 2 = 168/162 - Subtract the two like fractions:
486/162 - 168/162 = 486 - 168/162 = 318/162 - After reducing the fraction, the answer is 53/27
- In mixed form: 126/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/6-84/81 18/12-84/81 54/6-84/81 90/6-84/81 18/30-84/81 18/42-84/81