Subtract 15/50 from 10/81
10/81 - 15/50 is -143/810.
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,
10/81 = 10 × 50/81 × 50 = 500/4050 - Likewise, for the 2nd fraction, since 50 × 81 = 4050,
15/50 = 15 × 81/50 × 81 = 1215/4050 - Subtract the two like fractions:
500/4050 - 1215/4050 = 500 - 1215/4050 = -715/4050 - After reducing the fraction, the answer is -143/810
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/81-15/50 10/81-30/50 30/81-15/50 10/81-45/50 50/81-15/50 10/81-75/50 70/81-15/50