Subtract 25/14 from 12/21
1st number: 12/21, 2nd number: 1 11/14
12/21 - 25/14 is -17/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
12/21 = 12 × 2/21 × 2 = 24/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
25/14 = 25 × 3/14 × 3 = 75/42 - Subtract the two like fractions:
24/42 - 75/42 = 24 - 75/42 = -51/42 - After reducing the fraction, the answer is -17/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21-25/14 12/21-50/14 12/42-25/14 12/21-25/28 36/21-25/14 12/21-75/14 12/63-25/14 12/21-25/42 60/21-25/14 12/21-25/70 84/21-25/14 12/21-25/98