Subtract 10/81 from 27/5
1st number: 5 2/5, 2nd number: 10/81
27/5 - 10/81 is 2137/405.
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,
27/5 = 27 × 81/5 × 81 = 2187/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
10/81 = 10 × 5/81 × 5 = 50/405 - Subtract the two like fractions:
2187/405 - 50/405 = 2187 - 50/405 = 2137/405 - In mixed form: 5112/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/5-10/81 27/5-20/81 27/10-10/81 81/5-10/81 27/5-30/81 27/15-10/81 27/5-50/81 27/25-10/81 27/5-70/81 27/35-10/81