Subtract 25/36 from 2/21
2/21 - 25/36 is -151/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
2/21 = 2 × 12/21 × 12 = 24/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
25/36 = 25 × 7/36 × 7 = 175/252 - Subtract the two like fractions:
24/252 - 175/252 = 24 - 175/252 = -151/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-25/36 2/21-50/36 2/42-25/36 2/21-25/72 6/21-25/36 2/21-75/36 2/63-25/36 10/21-25/36 14/21-25/36