Subtract 9/84 from 21/6
1st number: 3 3/6, 2nd number: 9/84
21/6 - 9/84 is 95/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 6 × 14 = 84,
21/6 = 21 × 14/6 × 14 = 294/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
9/84 = 9 × 1/84 × 1 = 9/84 - Subtract the two like fractions:
294/84 - 9/84 = 294 - 9/84 = 285/84 - After reducing the fraction, the answer is 95/28
- In mixed form: 311/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6-9/84 21/6-18/84 21/12-9/84 63/6-9/84 21/6-27/84 21/18-9/84 21/6-45/84 21/30-9/84 21/6-63/84 21/42-9/84