Subtract 1/21 from 24/12
1st number: 2 0/12, 2nd number: 1/21
24/12 - 1/21 is 41/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
24/12 = 24 × 7/12 × 7 = 168/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
1/21 = 1 × 4/21 × 4 = 4/84 - Subtract the two like fractions:
168/84 - 4/84 = 168 - 4/84 = 164/84 - After reducing the fraction, the answer is 41/21
- In mixed form: 120/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/12-1/21 24/12-2/21 24/12-1/42 72/12-1/21 24/12-3/21 24/36-1/21 24/12-1/63 24/12-5/21 24/60-1/21 24/12-7/21 24/84-1/21