Subtract 10/81 from 40/3
1st number: 13 1/3, 2nd number: 10/81
40/3 - 10/81 is 1070/81.
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,
40/3 = 40 × 27/3 × 27 = 1080/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
10/81 = 10 × 1/81 × 1 = 10/81 - Subtract the two like fractions:
1080/81 - 10/81 = 1080 - 10/81 = 1070/81 - In mixed form: 1317/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/3-10/81 40/3-20/81 40/6-10/81 40/3-30/81 40/9-10/81 40/3-50/81 40/15-10/81 40/3-70/81 40/21-10/81