Subtract 81/50 from 8/15
1st number: 8/15, 2nd number: 1 31/50
8/15 - 81/50 is -163/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 15 × 10 = 150,
8/15 = 8 × 10/15 × 10 = 80/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
81/50 = 81 × 3/50 × 3 = 243/150 - Subtract the two like fractions:
80/150 - 243/150 = 80 - 243/150 = -163/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-81/50 8/30-81/50 24/15-81/50 8/45-81/50 40/15-81/50 8/75-81/50 56/15-81/50