Subtract 1/12 from 21/25
21/25 - 1/12 is 227/300.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 25 × 12 = 300,
21/25 = 21 × 12/25 × 12 = 252/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
1/12 = 1 × 25/12 × 25 = 25/300 - Subtract the two like fractions:
252/300 - 25/300 = 252 - 25/300 = 227/300
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/25-1/12 21/25-2/12 21/50-1/12 21/25-1/24 63/25-1/12 21/25-3/12 21/75-1/12 21/25-1/36 21/25-5/12 21/25-1/60 21/25-7/12 21/25-1/84