Subtract 12/6 from 1/21
1st number: 1/21, 2nd number: 2 0/6
1/21 - 12/6 is -41/21.
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,
1/21 = 1 × 2/21 × 2 = 2/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
12/6 = 12 × 7/6 × 7 = 84/42 - Subtract the two like fractions:
2/42 - 84/42 = 2 - 84/42 = -82/42 - After reducing the fraction, the answer is -41/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21-12/6 1/21-24/6 1/42-12/6 3/21-12/6 1/21-36/6 1/63-12/6 1/21-12/18 5/21-12/6 1/21-60/6 1/21-12/30 7/21-12/6 1/21-84/6 1/21-12/42