Subtract 5/81 from 10/7
1st number: 1 3/7, 2nd number: 5/81
10/7 - 5/81 is 775/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
10/7 = 10 × 81/7 × 81 = 810/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
5/81 = 5 × 7/81 × 7 = 35/567 - Subtract the two like fractions:
810/567 - 35/567 = 810 - 35/567 = 775/567 - In mixed form: 1208/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/7-5/81 10/7-10/81 10/14-5/81 30/7-5/81 10/7-15/81 10/21-5/81 50/7-5/81 10/7-25/81 10/35-5/81 70/7-5/81 10/7-35/81 10/49-5/81