Subtract 1/81 from 45/5
1st number: 9 0/5, 2nd number: 1/81
45/5 - 1/81 is 728/81.
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,
45/5 = 45 × 81/5 × 81 = 3645/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
1/81 = 1 × 5/81 × 5 = 5/405 - Subtract the two like fractions:
3645/405 - 5/405 = 3645 - 5/405 = 3640/405 - After reducing the fraction, the answer is 728/81
- In mixed form: 880/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-1/81 45/5-2/81 45/10-1/81 45/5-3/81 45/15-1/81 45/5-5/81 45/25-1/81 45/5-7/81 45/35-1/81