Subtract 21/14 from 8/5
1st number: 1 3/5, 2nd number: 1 7/14
8/5 - 21/14 is 1/10.
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,
8/5 = 8 × 14/5 × 14 = 112/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Subtract the two like fractions:
112/70 - 105/70 = 112 - 105/70 = 7/70 - After reducing the fraction, the answer is 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/5-21/14 8/5-42/14 8/10-21/14 8/5-21/28 24/5-21/14 8/5-63/14 8/15-21/14 8/5-21/42 40/5-21/14 8/25-21/14 8/5-21/70 56/5-21/14 8/35-21/14 8/5-21/98