Subtract 7/25 from 21/27
21/27 - 7/25 is 112/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 25 is 675
Next, find the equivalent fraction of both fractional numbers with denominator 675 - For the 1st fraction, since 27 × 25 = 675,
21/27 = 21 × 25/27 × 25 = 525/675 - Likewise, for the 2nd fraction, since 25 × 27 = 675,
7/25 = 7 × 27/25 × 27 = 189/675 - Subtract the two like fractions:
525/675 - 189/675 = 525 - 189/675 = 336/675 - After reducing the fraction, the answer is 112/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/27-7/25 21/27-14/25 21/54-7/25 21/27-7/50 63/27-7/25 21/27-21/25 21/81-7/25 21/27-7/75 21/27-35/25 21/27-49/25