Subtract 25/27 from 20/25
20/25 - 25/27 is -17/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 27 is 675
Next, find the equivalent fraction of both fractional numbers with denominator 675 - For the 1st fraction, since 25 × 27 = 675,
20/25 = 20 × 27/25 × 27 = 540/675 - Likewise, for the 2nd fraction, since 27 × 25 = 675,
25/27 = 25 × 25/27 × 25 = 625/675 - Subtract the two like fractions:
540/675 - 625/675 = 540 - 625/675 = -85/675 - After reducing the fraction, the answer is -17/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25-25/27 20/25-50/27 20/50-25/27 20/25-25/54 60/25-25/27 20/25-75/27 20/75-25/27 20/25-25/81