Subtract 27/21 from 12/25
1st number: 12/25, 2nd number: 1 6/21
12/25 - 27/21 is -141/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
12/25 = 12 × 21/25 × 21 = 252/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
27/21 = 27 × 25/21 × 25 = 675/525 - Subtract the two like fractions:
252/525 - 675/525 = 252 - 675/525 = -423/525 - After reducing the fraction, the answer is -141/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/25-27/21 12/25-54/21 12/50-27/21 12/25-27/42 36/25-27/21 12/25-81/21 12/75-27/21 12/25-27/63 60/25-27/21 84/25-27/21