Subtract 15/50 from 21/6
1st number: 3 3/6, 2nd number: 15/50
21/6 - 15/50 is 16/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 6 × 25 = 150,
21/6 = 21 × 25/6 × 25 = 525/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
15/50 = 15 × 3/50 × 3 = 45/150 - Subtract the two like fractions:
525/150 - 45/150 = 525 - 45/150 = 480/150 - After reducing the fraction, the answer is 16/5
- In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-15/50 21/6-30/50 21/12-15/50 63/6-15/50 21/6-45/50 21/18-15/50 21/6-75/50 21/30-15/50 21/42-15/50