Subtract 18/81 from 50/5
1st number: 10 0/5, 2nd number: 18/81
50/5 - 18/81 is 88/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
50/5 = 50 × 81/5 × 81 = 4050/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
18/81 = 18 × 5/81 × 5 = 90/405 - Subtract the two like fractions:
4050/405 - 90/405 = 4050 - 90/405 = 3960/405 - After reducing the fraction, the answer is 88/9
- In mixed form: 97/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/5-36/81 50/10-18/81 50/5-54/81 50/15-18/81 50/5-90/81 50/25-18/81 50/35-18/81