Subtract 80/18 from 20/6
1st number: 3 2/6, 2nd number: 4 8/18
20/6 - 80/18 is -10/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
20/6 = 20 × 3/6 × 3 = 60/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
80/18 = 80 × 1/18 × 1 = 80/18 - Subtract the two like fractions:
60/18 - 80/18 = 60 - 80/18 = -20/18 - After reducing the fraction, the answer is -10/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-80/18 20/12-80/18 20/6-80/36 60/6-80/18 20/18-80/18 20/6-80/54 20/30-80/18 20/6-80/90 20/42-80/18