Subtract 24/21 from 12/6
1st number: 2 0/6, 2nd number: 1 3/21
12/6 - 24/21 is 6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
12/6 = 12 × 7/6 × 7 = 84/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
24/21 = 24 × 2/21 × 2 = 48/42 - Subtract the two like fractions:
84/42 - 48/42 = 84 - 48/42 = 36/42 - After reducing the fraction, the answer is 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/6-24/21 12/6-48/21 12/6-24/42 36/6-24/21 12/6-72/21 12/18-24/21 12/6-24/63 60/6-24/21 12/30-24/21 84/6-24/21 12/42-24/21