Subtract 21/27 from 20/3
1st number: 6 2/3, 2nd number: 21/27
20/3 - 21/27 is 53/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 3 × 9 = 27,
20/3 = 20 × 9/3 × 9 = 180/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
21/27 = 21 × 1/27 × 1 = 21/27 - Subtract the two like fractions:
180/27 - 21/27 = 180 - 21/27 = 159/27 - After reducing the fraction, the answer is 53/9
- In mixed form: 58/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/3-21/27 20/3-42/27 20/6-21/27 20/3-21/54 60/3-21/27 20/3-63/27 20/9-21/27 20/3-21/81 20/15-21/27 20/21-21/27