Subtract 24/81 from 81/15
1st number: 5 6/15, 2nd number: 24/81
81/15 - 24/81 is 689/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
81/15 = 81 × 27/15 × 27 = 2187/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
24/81 = 24 × 5/81 × 5 = 120/405 - Subtract the two like fractions:
2187/405 - 120/405 = 2187 - 120/405 = 2067/405 - After reducing the fraction, the answer is 689/135
- In mixed form: 514/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/15-48/81 81/30-24/81 81/15-72/81 81/45-24/81 81/75-24/81