Subtract 21/27 from 16/25
16/25 - 21/27 is -31/225.
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,
16/25 = 16 × 27/25 × 27 = 432/675 - Likewise, for the 2nd fraction, since 27 × 25 = 675,
21/27 = 21 × 25/27 × 25 = 525/675 - Subtract the two like fractions:
432/675 - 525/675 = 432 - 525/675 = -93/675 - After reducing the fraction, the answer is -31/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/25-21/27 16/25-42/27 16/50-21/27 16/25-21/54 48/25-21/27 16/25-63/27 16/75-21/27 16/25-21/81 80/25-21/27