Subtract 21/84 from 6/12
6/12 - 21/84 is 1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
6/12 = 6 × 7/12 × 7 = 42/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Subtract the two like fractions:
42/84 - 21/84 = 42 - 21/84 = 21/84 - After reducing the fraction, the answer is 1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-42/84 6/24-21/84 18/12-21/84 6/12-63/84 6/36-21/84 30/12-21/84 6/60-21/84 42/12-21/84 6/84-21/84