Subtract 4/12 from 21/2
1st number: 10 1/2, 2nd number: 4/12
21/2 - 4/12 is 61/6.
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,
4/12 = 4 × 1/12 × 1 = 4/12 - Subtract the two like fractions:
126/12 - 4/12 = 126 - 4/12 = 122/12 - After reducing the fraction, the answer is 61/6
- In mixed form: 101/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-4/12 21/2-8/12 21/4-4/12 21/2-4/24 63/2-4/12 21/6-4/12 21/2-4/36 21/2-20/12 21/10-4/12 21/2-4/60 21/2-28/12 21/14-4/12 21/2-4/84