Subtract 4/14 from 21/36
21/36 - 4/14 is 25/84.
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,
21/36 = 21 × 7/36 × 7 = 147/252 - Likewise, for the 2nd fraction, since 14 × 18 = 252,
4/14 = 4 × 18/14 × 18 = 72/252 - Subtract the two like fractions:
147/252 - 72/252 = 147 - 72/252 = 75/252 - After reducing the fraction, the answer is 25/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36-4/14 21/36-8/14 21/72-4/14 21/36-4/28 63/36-4/14 21/36-12/14 21/36-4/42 21/36-20/14 21/36-4/70 21/36-28/14 21/36-4/98