Subtract 3/50 from 2/81
2/81 - 3/50 is -143/4050.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 50 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 81 × 50 = 4050,
2/81 = 2 × 50/81 × 50 = 100/4050 - Likewise, for the 2nd fraction, since 50 × 81 = 4050,
3/50 = 3 × 81/50 × 81 = 243/4050 - Subtract the two like fractions:
100/4050 - 243/4050 = 100 - 243/4050 = -143/4050
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/81-3/50 2/81-6/50 6/81-3/50 2/81-9/50 10/81-3/50 2/81-15/50 14/81-3/50 2/81-21/50