Subtract 30/81 from 1/6
1/6 - 30/81 is -11/54.
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,
1/6 = 1 × 27/6 × 27 = 27/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
30/81 = 30 × 2/81 × 2 = 60/162 - Subtract the two like fractions:
27/162 - 60/162 = 27 - 60/162 = -33/162 - After reducing the fraction, the answer is -11/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/6-30/81 1/6-60/81 1/12-30/81 3/6-30/81 1/6-90/81 1/18-30/81 5/6-30/81 1/30-30/81 7/6-30/81 1/42-30/81