Subtract 20/10 from 18/9
1st number: 2 0/9, 2nd number: 2 0/10
18/9 - 20/10 is 0/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
18/9 = 18 × 10/9 × 10 = 180/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
20/10 = 20 × 9/10 × 9 = 180/90 - Subtract the two like fractions:
180/90 - 180/90 = 180 - 180/90 = 0/90 - 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: 36/9-20/10 18/9-40/10 54/9-20/10 18/9-60/10 18/27-20/10 18/9-20/30 90/9-20/10 18/45-20/10 18/9-20/50 18/63-20/10 18/9-20/70