Subtract 15/48 from 21/50
21/50 - 15/48 is 43/400.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 48 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 50 × 24 = 1200,
21/50 = 21 × 24/50 × 24 = 504/1200 - Likewise, for the 2nd fraction, since 48 × 25 = 1200,
15/48 = 15 × 25/48 × 25 = 375/1200 - Subtract the two like fractions:
504/1200 - 375/1200 = 504 - 375/1200 = 129/1200 - After reducing the fraction, the answer is 43/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-15/48 21/50-30/48 21/50-15/96 63/50-15/48 21/50-45/48 21/50-75/48