Subtract 20/18 from 5/27
1st number: 5/27, 2nd number: 1 2/18
5/27 - 20/18 is -25/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
5/27 = 5 × 2/27 × 2 = 10/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
20/18 = 20 × 3/18 × 3 = 60/54 - Subtract the two like fractions:
10/54 - 60/54 = 10 - 60/54 = -50/54 - After reducing the fraction, the answer is -25/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/27-20/18 5/27-40/18 5/54-20/18 5/27-20/36 15/27-20/18 5/27-60/18 5/81-20/18 5/27-20/54 25/27-20/18 5/27-20/90 35/27-20/18