Subtract 4/9 from 2/20
2/20 - 4/9 is -31/90.
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,
2/20 = 2 × 9/20 × 9 = 18/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
4/9 = 4 × 20/9 × 20 = 80/180 - Subtract the two like fractions:
18/180 - 80/180 = 18 - 80/180 = -62/180 - After reducing the fraction, the answer is -31/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20-4/9 2/20-8/9 2/40-4/9 2/20-4/18 6/20-4/9 2/20-12/9 2/60-4/9 2/20-4/27 10/20-4/9 2/20-20/9 2/20-4/45 14/20-4/9 2/20-28/9 2/20-4/63