Subtract 9/6 from 21/9
1st number: 2 3/9, 2nd number: 1 3/6
21/9 - 9/6 is 5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 6 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
21/9 = 21 × 2/9 × 2 = 42/18 - Likewise, for the 2nd fraction, since 6 × 3 = 18,
9/6 = 9 × 3/6 × 3 = 27/18 - Subtract the two like fractions:
42/18 - 27/18 = 42 - 27/18 = 15/18 - After reducing the fraction, the answer is 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9-9/6 21/9-18/6 21/18-9/6 21/9-9/12 63/9-9/6 21/9-27/6 21/27-9/6 21/9-9/18 21/9-45/6 21/45-9/6 21/9-9/30 21/9-63/6 21/63-9/6 21/9-9/42