Subtract 50/27 from 28/81
1st number: 28/81, 2nd number: 1 23/27
28/81 - 50/27 is -122/81.
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,
28/81 = 28 × 1/81 × 1 = 28/81 - Likewise, for the 2nd fraction, since 27 × 3 = 81,
50/27 = 50 × 3/27 × 3 = 150/81 - Subtract the two like fractions:
28/81 - 150/81 = 28 - 150/81 = -122/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/81-50/27 28/81-50/54 84/81-50/27 28/81-50/81