Subtract 81/36 from 2/84
1st number: 2/84, 2nd number: 2 9/36
2/84 - 81/36 is -187/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
2/84 = 2 × 3/84 × 3 = 6/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
81/36 = 81 × 7/36 × 7 = 567/252 - Subtract the two like fractions:
6/252 - 567/252 = 6 - 567/252 = -561/252 - After reducing the fraction, the answer is -187/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/84-81/36 2/84-81/72 6/84-81/36 10/84-81/36 14/84-81/36