Subtract 21/81 from 32/3
1st number: 10 2/3, 2nd number: 21/81
32/3 - 21/81 is 281/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
32/3 = 32 × 27/3 × 27 = 864/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
21/81 = 21 × 1/81 × 1 = 21/81 - Subtract the two like fractions:
864/81 - 21/81 = 864 - 21/81 = 843/81 - After reducing the fraction, the answer is 281/27
- In mixed form: 1011/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/3-21/81 32/3-42/81 32/6-21/81 96/3-21/81 32/3-63/81 32/9-21/81 32/15-21/81 32/21-21/81