Subtract 8/81 from 30/6
1st number: 5 0/6, 2nd number: 8/81
30/6 - 8/81 is 397/81.
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,
30/6 = 30 × 27/6 × 27 = 810/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
8/81 = 8 × 2/81 × 2 = 16/162 - Subtract the two like fractions:
810/162 - 16/162 = 810 - 16/162 = 794/162 - After reducing the fraction, the answer is 397/81
- In mixed form: 473/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/6-8/81 30/6-16/81 30/12-8/81 90/6-8/81 30/6-24/81 30/18-8/81 30/6-40/81 30/6-56/81 30/42-8/81