Subtract 9/50 from 15/21
15/21 - 9/50 is 187/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
15/21 = 15 × 50/21 × 50 = 750/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
9/50 = 9 × 21/50 × 21 = 189/1050 - Subtract the two like fractions:
750/1050 - 189/1050 = 750 - 189/1050 = 561/1050 - After reducing the fraction, the answer is 187/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21-9/50 15/21-18/50 15/42-9/50 45/21-9/50 15/21-27/50 15/63-9/50 75/21-9/50 15/21-45/50 15/21-63/50