Subtract 15/50 from 21/32
21/32 - 15/50 is 57/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 50 is 800
Next, find the equivalent fraction of both fractional numbers with denominator 800 - For the 1st fraction, since 32 × 25 = 800,
21/32 = 21 × 25/32 × 25 = 525/800 - Likewise, for the 2nd fraction, since 50 × 16 = 800,
15/50 = 15 × 16/50 × 16 = 240/800 - Subtract the two like fractions:
525/800 - 240/800 = 525 - 240/800 = 285/800 - After reducing the fraction, the answer is 57/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/32-15/50 21/32-30/50 21/64-15/50 63/32-15/50 21/32-45/50 21/96-15/50 21/32-75/50