Subtract 10/20 from 28/9
1st number: 3 1/9, 2nd number: 10/20
28/9 - 10/20 is 47/18.
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,
28/9 = 28 × 20/9 × 20 = 560/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Subtract the two like fractions:
560/180 - 90/180 = 560 - 90/180 = 470/180 - After reducing the fraction, the answer is 47/18
- In mixed form: 211/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/9-10/20 28/18-10/20 28/9-10/40 84/9-10/20 28/9-30/20 28/27-10/20 28/9-10/60 28/9-50/20 28/45-10/20 28/9-70/20 28/63-10/20