Subtract 45/14 from 25/21
1st number: 1 4/21, 2nd number: 3 3/14
25/21 - 45/14 is -85/42.
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,
25/21 = 25 × 2/21 × 2 = 50/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
45/14 = 45 × 3/14 × 3 = 135/42 - Subtract the two like fractions:
50/42 - 135/42 = 50 - 135/42 = -85/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-45/14 25/21-90/14 25/42-45/14 25/21-45/28 75/21-45/14 25/63-45/14 25/21-45/42 25/21-45/70 25/21-45/98