Subtract 21/14 from 25/36
1st number: 25/36, 2nd number: 1 7/14
25/36 - 21/14 is -29/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 14 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
25/36 = 25 × 7/36 × 7 = 175/252 - Likewise, for the 2nd fraction, since 14 × 18 = 252,
21/14 = 21 × 18/14 × 18 = 378/252 - Subtract the two like fractions:
175/252 - 378/252 = 175 - 378/252 = -203/252 - After reducing the fraction, the answer is -29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/36-21/14 25/36-42/14 25/72-21/14 25/36-21/28 75/36-21/14 25/36-63/14 25/36-21/42 25/36-21/70 25/36-21/98