Subtract 10/5 from 21/50
1st number: 21/50, 2nd number: 2 0/5
21/50 - 10/5 is -79/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 5 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 50 × 1 = 50,
21/50 = 21 × 1/50 × 1 = 21/50 - Likewise, for the 2nd fraction, since 5 × 10 = 50,
10/5 = 10 × 10/5 × 10 = 100/50 - Subtract the two like fractions:
21/50 - 100/50 = 21 - 100/50 = -79/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-10/5 21/50-20/5 63/50-10/5 21/50-30/5 21/50-10/15 21/50-50/5 21/50-10/25 21/50-70/5 21/50-10/35