Subtract 4/9 from 3/20
3/20 - 4/9 is -53/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
3/20 = 3 × 9/20 × 9 = 27/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
4/9 = 4 × 20/9 × 20 = 80/180 - Subtract the two like fractions:
27/180 - 80/180 = 27 - 80/180 = -53/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-4/9 3/20-8/9 3/40-4/9 3/20-4/18 9/20-4/9 3/20-12/9 3/60-4/9 3/20-4/27 15/20-4/9 3/20-20/9 3/20-4/45 21/20-4/9 3/20-28/9 3/20-4/63