Subtract 21/6 from 32/81
1st number: 32/81, 2nd number: 3 3/6
32/81 - 21/6 is -503/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 6 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
32/81 = 32 × 2/81 × 2 = 64/162 - Likewise, for the 2nd fraction, since 6 × 27 = 162,
21/6 = 21 × 27/6 × 27 = 567/162 - Subtract the two like fractions:
64/162 - 567/162 = 64 - 567/162 = -503/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/81-21/6 32/81-42/6 32/81-21/12 96/81-21/6 32/81-63/6 32/81-21/18 32/81-21/30 32/81-21/42