Subtract 10/20 from 9/18
9/18 - 10/20 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
9/18 = 9 × 10/18 × 10 = 90/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Subtract the two like fractions:
90/180 - 90/180 = 90 - 90/180 = 0/180 - The answer is 0
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/36-10/20 9/18-10/40 27/18-10/20 9/18-30/20 9/54-10/20 9/18-10/60 45/18-10/20 9/18-50/20 9/90-10/20 63/18-10/20 9/18-70/20