Subtract 1/32 from 2/21
2/21 - 1/32 is 43/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
2/21 = 2 × 32/21 × 32 = 64/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
1/32 = 1 × 21/32 × 21 = 21/672 - Subtract the two like fractions:
64/672 - 21/672 = 64 - 21/672 = 43/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-1/32 2/21-2/32 2/42-1/32 2/21-1/64 6/21-1/32 2/21-3/32 2/63-1/32 2/21-1/96 10/21-1/32 2/21-5/32 14/21-1/32 2/21-7/32