Subtract 3/20 from 5/9
5/9 - 3/20 is 73/180.
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,
5/9 = 5 × 20/9 × 20 = 100/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
3/20 = 3 × 9/20 × 9 = 27/180 - Subtract the two like fractions:
100/180 - 27/180 = 100 - 27/180 = 73/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9-3/20 5/9-6/20 5/18-3/20 5/9-3/40 15/9-3/20 5/9-9/20 5/27-3/20 5/9-3/60 25/9-3/20 5/9-15/20 5/45-3/20 35/9-3/20 5/9-21/20 5/63-3/20