Subtract 28/27 from 20/9
1st number: 2 2/9, 2nd number: 1 1/27
20/9 - 28/27 is 32/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 9 × 3 = 27,
20/9 = 20 × 3/9 × 3 = 60/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
28/27 = 28 × 1/27 × 1 = 28/27 - Subtract the two like fractions:
60/27 - 28/27 = 60 - 28/27 = 32/27 - In mixed form: 15/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9-28/27 20/9-56/27 20/18-28/27 20/9-28/54 60/9-28/27 20/9-84/27 20/27-28/27 20/9-28/81 20/45-28/27 20/63-28/27