Subtract 3/27 from 21/6
1st number: 3 3/6, 2nd number: 3/27
21/6 - 3/27 is 61/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 6 × 9 = 54,
21/6 = 21 × 9/6 × 9 = 189/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
3/27 = 3 × 2/27 × 2 = 6/54 - Subtract the two like fractions:
189/54 - 6/54 = 189 - 6/54 = 183/54 - After reducing the fraction, the answer is 61/18
- In mixed form: 37/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-3/27 21/6-6/27 21/12-3/27 21/6-3/54 63/6-3/27 21/6-9/27 21/18-3/27 21/6-3/81 21/6-15/27 21/30-3/27 21/6-21/27 21/42-3/27