Subtract 6/21 from 2/10
2/10 - 6/21 is -3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
2/10 = 2 × 21/10 × 21 = 42/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
6/21 = 6 × 10/21 × 10 = 60/210 - Subtract the two like fractions:
42/210 - 60/210 = 42 - 60/210 = -18/210 - After reducing the fraction, the answer is -3/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/10-6/21 2/10-12/21 2/20-6/21 2/10-6/42 6/10-6/21 2/10-18/21 2/30-6/21 2/10-6/63 2/10-30/21 2/50-6/21 14/10-6/21 2/10-42/21 2/70-6/21