Subtract 21/5 from 15/50
1st number: 15/50, 2nd number: 4 1/5
15/50 - 21/5 is -39/10.
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,
15/50 = 15 × 1/50 × 1 = 15/50 - Likewise, for the 2nd fraction, since 5 × 10 = 50,
21/5 = 21 × 10/5 × 10 = 210/50 - Subtract the two like fractions:
15/50 - 210/50 = 15 - 210/50 = -195/50 - After reducing the fraction, the answer is -39/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/50-21/5 15/50-42/5 15/50-21/10 45/50-21/5 15/50-63/5 15/50-21/15 75/50-21/5 15/50-21/25 15/50-21/35