Subtract 27/9 from 20/10
1st number: 2 0/10, 2nd number: 3 0/9
20/10 - 27/9 is -1/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
20/10 = 20 × 9/10 × 9 = 180/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
27/9 = 27 × 10/9 × 10 = 270/90 - Subtract the two like fractions:
180/90 - 270/90 = 180 - 270/90 = -90/90 - After reducing the fraction, the answer is -1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10-27/9 20/10-54/9 20/10-27/18 60/10-27/9 20/10-81/9 20/30-27/9 20/50-27/9 20/10-27/45 20/70-27/9 20/10-27/63