Subtract 3/81 from 45/3
1st number: 15 0/3, 2nd number: 3/81
45/3 - 3/81 is 404/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
45/3 = 45 × 27/3 × 27 = 1215/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
3/81 = 3 × 1/81 × 1 = 3/81 - Subtract the two like fractions:
1215/81 - 3/81 = 1215 - 3/81 = 1212/81 - After reducing the fraction, the answer is 404/27
- In mixed form: 1426/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3-3/81 45/3-6/81 45/6-3/81 45/3-9/81 45/9-3/81 45/3-15/81 45/15-3/81 45/3-21/81 45/21-3/81