Subtract 24/12 from 21/2
1st number: 10 1/2, 2nd number: 2 0/12
21/2 - 24/12 is 17/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
21/2 = 21 × 6/2 × 6 = 126/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
24/12 = 24 × 1/12 × 1 = 24/12 - Subtract the two like fractions:
126/12 - 24/12 = 126 - 24/12 = 102/12 - After reducing the fraction, the answer is 17/2
- In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-24/12 21/2-48/12 21/4-24/12 63/2-24/12 21/2-72/12 21/6-24/12 21/2-24/36 21/10-24/12 21/2-24/60 21/14-24/12 21/2-24/84