Subtract 27/25 from 27/21
1st number: 1 6/21, 2nd number: 1 2/25
27/21 - 27/25 is 36/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
27/21 = 27 × 25/21 × 25 = 675/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
27/25 = 27 × 21/25 × 21 = 567/525 - Subtract the two like fractions:
675/525 - 567/525 = 675 - 567/525 = 108/525 - After reducing the fraction, the answer is 36/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21-27/25 27/21-54/25 27/42-27/25 27/21-27/50 81/21-27/25 27/21-81/25 27/63-27/25 27/21-27/75