Subtract 3/21 from 8/14
8/14 - 3/21 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
8/14 = 8 × 3/14 × 3 = 24/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
3/21 = 3 × 2/21 × 2 = 6/42 - Subtract the two like fractions:
24/42 - 6/42 = 24 - 6/42 = 18/42 - After reducing the fraction, the answer is 3/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/14-3/21 8/14-6/21 8/28-3/21 8/14-3/42 24/14-3/21 8/14-9/21 8/42-3/21 8/14-3/63 40/14-3/21 8/14-15/21 8/70-3/21 56/14-3/21 8/98-3/21