Subtract 21/9 from 25/2
1st number: 12 1/2, 2nd number: 2 3/9
25/2 - 21/9 is 61/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
25/2 = 25 × 9/2 × 9 = 225/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
21/9 = 21 × 2/9 × 2 = 42/18 - Subtract the two like fractions:
225/18 - 42/18 = 225 - 42/18 = 183/18 - After reducing the fraction, the answer is 61/6
- In mixed form: 101/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/2-21/9 25/2-42/9 25/4-21/9 25/2-21/18 75/2-21/9 25/2-63/9 25/6-21/9 25/2-21/27 25/10-21/9 25/2-21/45 25/14-21/9 25/2-21/63