Subtract 6/8 from 21/14
1st number: 1 7/14, 2nd number: 6/8
21/14 - 6/8 is 3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 14 × 4 = 56,
21/14 = 21 × 4/14 × 4 = 84/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
6/8 = 6 × 7/8 × 7 = 42/56 - Subtract the two like fractions:
84/56 - 42/56 = 84 - 42/56 = 42/56 - After reducing the fraction, the answer is 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-6/8 21/14-12/8 21/28-6/8 21/14-6/16 63/14-6/8 21/14-18/8 21/42-6/8 21/14-6/24 21/14-30/8 21/70-6/8 21/14-6/40 21/14-42/8 21/98-6/8 21/14-6/56