Subtract 84/36 from 21/14
1st number: 1 7/14, 2nd number: 2 12/36
21/14 - 84/36 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 14 × 18 = 252,
21/14 = 21 × 18/14 × 18 = 378/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
84/36 = 84 × 7/36 × 7 = 588/252 - Subtract the two like fractions:
378/252 - 588/252 = 378 - 588/252 = -210/252 - After reducing the fraction, the answer is -5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-84/36 21/28-84/36 21/14-84/72 63/14-84/36 21/42-84/36 21/70-84/36 21/98-84/36