Subtract 40/81 from 10/7
1st number: 1 3/7, 2nd number: 40/81
10/7 - 40/81 is 530/567.
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,
40/81 = 40 × 7/81 × 7 = 280/567 - Subtract the two like fractions:
810/567 - 280/567 = 810 - 280/567 = 530/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/7-40/81 10/7-80/81 10/14-40/81 30/7-40/81 10/21-40/81 50/7-40/81 10/35-40/81 70/7-40/81 10/49-40/81