Subtract 2/90 from 20/9
1st number: 2 2/9, 2nd number: 2/90
20/9 - 2/90 is 11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 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 90 × 1 = 90,
2/90 = 2 × 1/90 × 1 = 2/90 - Subtract the two like fractions:
200/90 - 2/90 = 200 - 2/90 = 198/90 - After reducing the fraction, the answer is 11/5
- In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/9-2/90 20/9-4/90 20/18-2/90 60/9-2/90 20/9-6/90 20/27-2/90 20/9-10/90 20/45-2/90 20/9-14/90 20/63-2/90