Subtract 9/50 from 9/21
9/21 - 9/50 is 87/350.
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,
9/21 = 9 × 50/21 × 50 = 450/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
9/50 = 9 × 21/50 × 21 = 189/1050 - Subtract the two like fractions:
450/1050 - 189/1050 = 450 - 189/1050 = 261/1050 - After reducing the fraction, the answer is 87/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21-9/50 9/21-18/50 9/42-9/50 27/21-9/50 9/21-27/50 9/63-9/50 45/21-9/50 9/21-45/50 63/21-9/50 9/21-63/50