Subtract 3/10 from 21/50
21/50 - 3/10 is 3/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 10 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 10 × 5 = 50,
3/10 = 3 × 5/10 × 5 = 15/50 - Subtract the two like fractions:
21/50 - 15/50 = 21 - 15/50 = 6/50 - After reducing the fraction, the answer is 3/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-3/10 21/50-6/10 21/50-3/20 63/50-3/10 21/50-9/10 21/50-3/30 21/50-15/10 21/50-3/50 21/50-21/10 21/50-3/70