Subtract 12/81 from 28/3
1st number: 9 1/3, 2nd number: 12/81
28/3 - 12/81 is 248/27.
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,
28/3 = 28 × 27/3 × 27 = 756/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
12/81 = 12 × 1/81 × 1 = 12/81 - Subtract the two like fractions:
756/81 - 12/81 = 756 - 12/81 = 744/81 - After reducing the fraction, the answer is 248/27
- In mixed form: 95/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/3-12/81 28/3-24/81 28/6-12/81 84/3-12/81 28/3-36/81 28/9-12/81 28/3-60/81 28/15-12/81 28/3-84/81 28/21-12/81