Subtract 4/32 from 3/21
3/21 - 4/32 is 1/56.
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,
3/21 = 3 × 32/21 × 32 = 96/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
4/32 = 4 × 21/32 × 21 = 84/672 - Subtract the two like fractions:
96/672 - 84/672 = 96 - 84/672 = 12/672 - After reducing the fraction, the answer is 1/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/21-4/32 3/21-8/32 3/42-4/32 3/21-4/64 9/21-4/32 3/21-12/32 3/63-4/32 3/21-4/96 15/21-4/32 3/21-20/32 3/21-28/32