Subtract 27/81 from 30/50
30/50 - 27/81 is 4/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
30/50 = 30 × 81/50 × 81 = 2430/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
27/81 = 27 × 50/81 × 50 = 1350/4050 - Subtract the two like fractions:
2430/4050 - 1350/4050 = 2430 - 1350/4050 = 1080/4050 - After reducing the fraction, the answer is 4/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/50-27/81 30/50-54/81 90/50-27/81