Subtract 4/6 from 10/21
10/21 - 4/6 is -4/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
10/21 = 10 × 2/21 × 2 = 20/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
4/6 = 4 × 7/6 × 7 = 28/42 - Subtract the two like fractions:
20/42 - 28/42 = 20 - 28/42 = -8/42 - After reducing the fraction, the answer is -4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-4/6 10/21-8/6 10/42-4/6 10/21-4/12 30/21-4/6 10/21-12/6 10/63-4/6 10/21-4/18 50/21-4/6 10/21-20/6 10/21-4/30 70/21-4/6 10/21-28/6 10/21-4/42