Subtract 21/32 from 1/5
1/5 - 21/32 is -73/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 5 × 32 = 160,
1/5 = 1 × 32/5 × 32 = 32/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
21/32 = 21 × 5/32 × 5 = 105/160 - Subtract the two like fractions:
32/160 - 105/160 = 32 - 105/160 = -73/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5-21/32 1/5-42/32 1/10-21/32 1/5-21/64 3/5-21/32 1/5-63/32 1/15-21/32 1/5-21/96 1/25-21/32 7/5-21/32 1/35-21/32