Subtract 8/21 from 3/14
3/14 - 8/21 is -1/6.
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,
3/14 = 3 × 3/14 × 3 = 9/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
8/21 = 8 × 2/21 × 2 = 16/42 - Subtract the two like fractions:
9/42 - 16/42 = 9 - 16/42 = -7/42 - After reducing the fraction, the answer is -1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/14-8/21 3/14-16/21 3/28-8/21 3/14-8/42 9/14-8/21 3/14-24/21 3/42-8/21 3/14-8/63 15/14-8/21 3/14-40/21 3/70-8/21 21/14-8/21 3/14-56/21 3/98-8/21