Subtract 15/21 from 25/14
1st number: 1 11/14, 2nd number: 15/21
25/14 - 15/21 is 15/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
25/14 = 25 × 3/14 × 3 = 75/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
15/21 = 15 × 2/21 × 2 = 30/42 - Subtract the two like fractions:
75/42 - 30/42 = 75 - 30/42 = 45/42 - After reducing the fraction, the answer is 15/14
- In mixed form: 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/14-15/21 25/14-30/21 25/28-15/21 25/14-15/42 75/14-15/21 25/14-45/21 25/42-15/21 25/14-15/63 25/14-75/21 25/70-15/21 25/98-15/21