Subtract 4/10 from 20/9
1st number: 2 2/9, 2nd number: 4/10
20/9 - 4/10 is 82/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
20/9 = 20 × 10/9 × 10 = 200/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
4/10 = 4 × 9/10 × 9 = 36/90 - Subtract the two like fractions:
200/90 - 36/90 = 200 - 36/90 = 164/90 - After reducing the fraction, the answer is 82/45
- In mixed form: 137/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9-4/10 20/9-8/10 20/18-4/10 20/9-4/20 60/9-4/10 20/9-12/10 20/27-4/10 20/9-4/30 20/9-20/10 20/45-4/10 20/9-4/50 20/9-28/10 20/63-4/10 20/9-4/70