Subtract 50/27 from 18/81
1st number: 18/81, 2nd number: 1 23/27
18/81 - 50/27 is -44/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 27 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
18/81 = 18 × 1/81 × 1 = 18/81 - Likewise, for the 2nd fraction, since 27 × 3 = 81,
50/27 = 50 × 3/27 × 3 = 150/81 - Subtract the two like fractions:
18/81 - 150/81 = 18 - 150/81 = -132/81 - After reducing the fraction, the answer is -44/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/81-50/27 18/81-50/54 54/81-50/27 18/81-50/81 90/81-50/27