Subtract 3/81 from 7/3
1st number: 2 1/3, 2nd number: 3/81
7/3 - 3/81 is 62/27.
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,
7/3 = 7 × 27/3 × 27 = 189/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
3/81 = 3 × 1/81 × 1 = 3/81 - Subtract the two like fractions:
189/81 - 3/81 = 189 - 3/81 = 186/81 - After reducing the fraction, the answer is 62/27
- In mixed form: 28/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/3-3/81 7/3-6/81 7/6-3/81 21/3-3/81 7/3-9/81 7/9-3/81 35/3-3/81 7/3-15/81 7/15-3/81 49/3-3/81 7/3-21/81 7/21-3/81