Subtract 28/20 from 64/9
1st number: 7 1/9, 2nd number: 1 8/20
64/9 - 28/20 is 257/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
64/9 = 64 × 20/9 × 20 = 1280/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
28/20 = 28 × 9/20 × 9 = 252/180 - Subtract the two like fractions:
1280/180 - 252/180 = 1280 - 252/180 = 1028/180 - After reducing the fraction, the answer is 257/45
- In mixed form: 532/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/9-56/20 64/18-28/20 64/9-28/40 64/9-84/20 64/27-28/20 64/9-28/60 64/45-28/20 64/63-28/20