Subtract 10/6 from 5/21
1st number: 5/21, 2nd number: 1 4/6
5/21 - 10/6 is -10/7.
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,
5/21 = 5 × 2/21 × 2 = 10/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
10/6 = 10 × 7/6 × 7 = 70/42 - Subtract the two like fractions:
10/42 - 70/42 = 10 - 70/42 = -60/42 - After reducing the fraction, the answer is -10/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21-10/6 5/21-20/6 5/42-10/6 5/21-10/12 15/21-10/6 5/21-30/6 5/63-10/6 5/21-10/18 25/21-10/6 5/21-50/6 5/21-10/30 35/21-10/6 5/21-70/6 5/21-10/42