Subtract 8/90 from 2/20
2/20 - 8/90 is 1/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 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 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Subtract the two like fractions:
18/180 - 16/180 = 18 - 16/180 = 2/180 - After reducing the fraction, the answer is 1/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20-8/90 2/20-16/90 2/40-8/90 6/20-8/90 2/20-24/90 2/60-8/90 10/20-8/90 2/20-40/90 14/20-8/90 2/20-56/90