Subtract 50/81 from 28/9
1st number: 3 1/9, 2nd number: 50/81
28/9 - 50/81 is 202/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
28/9 = 28 × 9/9 × 9 = 252/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
50/81 = 50 × 1/81 × 1 = 50/81 - Subtract the two like fractions:
252/81 - 50/81 = 252 - 50/81 = 202/81 - In mixed form: 240/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/9-50/81 28/18-50/81 84/9-50/81 28/27-50/81 28/45-50/81 28/63-50/81