Subtract 21/50 from 10/28
10/28 - 21/50 is -11/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
10/28 = 10 × 25/28 × 25 = 250/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
21/50 = 21 × 14/50 × 14 = 294/700 - Subtract the two like fractions:
250/700 - 294/700 = 250 - 294/700 = -44/700 - After reducing the fraction, the answer is -11/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/28-21/50 10/28-42/50 10/56-21/50 30/28-21/50 10/28-63/50 10/84-21/50 50/28-21/50 70/28-21/50