Subtract 1/50 from 75/81
75/81 - 1/50 is 1223/1350.
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,
75/81 = 75 × 50/81 × 50 = 3750/4050 - Likewise, for the 2nd fraction, since 50 × 81 = 4050,
1/50 = 1 × 81/50 × 81 = 81/4050 - Subtract the two like fractions:
3750/4050 - 81/4050 = 3750 - 81/4050 = 3669/4050 - After reducing the fraction, the answer is 1223/1350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/81-2/50 75/81-3/50 75/81-5/50 75/81-7/50