Subtract 20/90 from 5/9
5/9 - 20/90 is 1/3.
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,
5/9 = 5 × 10/9 × 10 = 50/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Subtract the two like fractions:
50/90 - 20/90 = 50 - 20/90 = 30/90 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9-20/90 5/9-40/90 5/18-20/90 15/9-20/90 5/9-60/90 5/27-20/90 25/9-20/90 5/45-20/90 35/9-20/90 5/63-20/90