Subtract 8/81 from 27/45
27/45 - 8/81 is 203/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 45 × 9 = 405,
27/45 = 27 × 9/45 × 9 = 243/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
8/81 = 8 × 5/81 × 5 = 40/405 - Subtract the two like fractions:
243/405 - 40/405 = 243 - 40/405 = 203/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/45-8/81 27/45-16/81 27/90-8/81 81/45-8/81 27/45-24/81 27/45-40/81 27/45-56/81