Subtract 1/20 from 81/6
1st number: 13 3/6, 2nd number: 1/20
81/6 - 1/20 is 269/20.
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,
81/6 = 81 × 10/6 × 10 = 810/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
1/20 = 1 × 3/20 × 3 = 3/60 - Subtract the two like fractions:
810/60 - 3/60 = 810 - 3/60 = 807/60 - After reducing the fraction, the answer is 269/20
- In mixed form: 139/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/6-2/20 81/12-1/20 81/6-1/40 81/6-3/20 81/18-1/20 81/6-1/60 81/6-5/20 81/30-1/20 81/6-7/20 81/42-1/20