Subtract 20/18 from 8/27
1st number: 8/27, 2nd number: 1 2/18
8/27 - 20/18 is -22/27.
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,
8/27 = 8 × 2/27 × 2 = 16/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
20/18 = 20 × 3/18 × 3 = 60/54 - Subtract the two like fractions:
16/54 - 60/54 = 16 - 60/54 = -44/54 - After reducing the fraction, the answer is -22/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/27-20/18 8/27-40/18 8/54-20/18 8/27-20/36 24/27-20/18 8/27-60/18 8/81-20/18 8/27-20/54 40/27-20/18 8/27-20/90 56/27-20/18