Subtract 10/50 from 8/81
8/81 - 10/50 is -41/405.
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,
8/81 = 8 × 50/81 × 50 = 400/4050 - Likewise, for the 2nd fraction, since 50 × 81 = 4050,
10/50 = 10 × 81/50 × 81 = 810/4050 - Subtract the two like fractions:
400/4050 - 810/4050 = 400 - 810/4050 = -410/4050 - After reducing the fraction, the answer is -41/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/81-10/50 8/81-20/50 24/81-10/50 8/81-30/50 40/81-10/50 56/81-10/50 8/81-70/50