Subtract 6/7 from 81/36
1st number: 2 9/36, 2nd number: 6/7
81/36 - 6/7 is 39/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
81/36 = 81 × 7/36 × 7 = 567/252 - Likewise, for the 2nd fraction, since 7 × 36 = 252,
6/7 = 6 × 36/7 × 36 = 216/252 - Subtract the two like fractions:
567/252 - 216/252 = 567 - 216/252 = 351/252 - After reducing the fraction, the answer is 39/28
- In mixed form: 111/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/36-12/7 81/72-6/7 81/36-6/14 81/36-18/7 81/36-6/21 81/36-30/7 81/36-6/35 81/36-42/7 81/36-6/49