Subtract 7/3 from 81/50
1st number: 1 31/50, 2nd number: 2 1/3
81/50 - 7/3 is -107/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 3 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
81/50 = 81 × 3/50 × 3 = 243/150 - Likewise, for the 2nd fraction, since 3 × 50 = 150,
7/3 = 7 × 50/3 × 50 = 350/150 - Subtract the two like fractions:
243/150 - 350/150 = 243 - 350/150 = -107/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/50-14/3 81/50-7/6 81/50-21/3 81/50-7/9 81/50-35/3 81/50-7/15 81/50-49/3 81/50-7/21