Subtract 81/20 from 20/6
1st number: 3 2/6, 2nd number: 4 1/20
20/6 - 81/20 is -43/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
20/6 = 20 × 10/6 × 10 = 200/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Subtract the two like fractions:
200/60 - 243/60 = 200 - 243/60 = -43/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-81/20 20/12-81/20 20/6-81/40 60/6-81/20 20/18-81/20 20/6-81/60 20/30-81/20 20/42-81/20