Subtract 10/81 from 18/3
1st number: 6 0/3, 2nd number: 10/81
18/3 - 10/81 is 476/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
18/3 = 18 × 27/3 × 27 = 486/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
10/81 = 10 × 1/81 × 1 = 10/81 - Subtract the two like fractions:
486/81 - 10/81 = 486 - 10/81 = 476/81 - In mixed form: 571/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3-10/81 18/3-20/81 18/6-10/81 54/3-10/81 18/3-30/81 18/9-10/81 90/3-10/81 18/3-50/81 18/15-10/81 18/3-70/81 18/21-10/81