Subtract 18/50 from 21/32
21/32 - 18/50 is 237/800.
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,
18/50 = 18 × 16/50 × 16 = 288/800 - Subtract the two like fractions:
525/800 - 288/800 = 525 - 288/800 = 237/800
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/32-18/50 21/32-36/50 21/64-18/50 63/32-18/50 21/32-54/50 21/96-18/50 21/32-90/50