Subtract 3/32 from 21/80
21/80 - 3/32 is 27/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 32 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 80 × 2 = 160,
21/80 = 21 × 2/80 × 2 = 42/160 - Likewise, for the 2nd fraction, since 32 × 5 = 160,
3/32 = 3 × 5/32 × 5 = 15/160 - Subtract the two like fractions:
42/160 - 15/160 = 42 - 15/160 = 27/160
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/80-3/32 21/80-6/32 21/80-3/64 63/80-3/32 21/80-9/32 21/80-3/96 21/80-15/32 21/80-21/32