Subtract 21/36 from 81/3
1st number: 27 0/3, 2nd number: 21/36
81/3 - 21/36 is 317/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 3 × 12 = 36,
81/3 = 81 × 12/3 × 12 = 972/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
21/36 = 21 × 1/36 × 1 = 21/36 - Subtract the two like fractions:
972/36 - 21/36 = 972 - 21/36 = 951/36 - After reducing the fraction, the answer is 317/12
- In mixed form: 265/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/3-42/36 81/6-21/36 81/3-21/72 81/3-63/36 81/9-21/36 81/15-21/36 81/21-21/36