Subtract 21/25 from 8/28
8/28 - 21/25 is -97/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 25 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
8/28 = 8 × 25/28 × 25 = 200/700 - Likewise, for the 2nd fraction, since 25 × 28 = 700,
21/25 = 21 × 28/25 × 28 = 588/700 - Subtract the two like fractions:
200/700 - 588/700 = 200 - 588/700 = -388/700 - After reducing the fraction, the answer is -97/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/28-21/25 8/28-42/25 8/56-21/25 8/28-21/50 24/28-21/25 8/28-63/25 8/84-21/25 8/28-21/75 40/28-21/25 56/28-21/25