Subtract 21/14 from 35/36
1st number: 35/36, 2nd number: 1 7/14
35/36 - 21/14 is -19/36.
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,
35/36 = 35 × 7/36 × 7 = 245/252 - Likewise, for the 2nd fraction, since 14 × 18 = 252,
21/14 = 21 × 18/14 × 18 = 378/252 - Subtract the two like fractions:
245/252 - 378/252 = 245 - 378/252 = -133/252 - After reducing the fraction, the answer is -19/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/36-21/14 35/36-42/14 35/72-21/14 35/36-21/28 35/36-63/14 35/36-21/42 35/36-21/70 35/36-21/98