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