Subtract 21/14 from 3/5
1st number: 3/5, 2nd number: 1 7/14
3/5 - 21/14 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 14 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
3/5 = 3 × 14/5 × 14 = 42/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Subtract the two like fractions:
42/70 - 105/70 = 42 - 105/70 = -63/70 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5-21/14 3/5-42/14 3/10-21/14 3/5-21/28 9/5-21/14 3/5-63/14 3/15-21/14 3/5-21/42 15/5-21/14 3/25-21/14 3/5-21/70 21/5-21/14 3/35-21/14 3/5-21/98