Subtract 27/20 from 27/9
1st number: 3 0/9, 2nd number: 1 7/20
27/9 - 27/20 is 33/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
27/9 = 27 × 20/9 × 20 = 540/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
27/20 = 27 × 9/20 × 9 = 243/180 - Subtract the two like fractions:
540/180 - 243/180 = 540 - 243/180 = 297/180 - After reducing the fraction, the answer is 33/20
- In mixed form: 113/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/9-27/20 27/9-54/20 27/18-27/20 27/9-27/40 81/9-27/20 27/9-81/20 27/9-27/60 27/45-27/20 27/63-27/20