Subtract 24/8 from 21/2
1st number: 10 1/2, 2nd number: 3 0/8
21/2 - 24/8 is 15/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,
21/2 = 21 × 4/2 × 4 = 84/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
24/8 = 24 × 1/8 × 1 = 24/8 - Subtract the two like fractions:
84/8 - 24/8 = 84 - 24/8 = 60/8 - After reducing the fraction, the answer is 15/2
- In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-24/8 21/2-48/8 21/4-24/8 21/2-24/16 63/2-24/8 21/2-72/8 21/6-24/8 21/10-24/8 21/2-24/40 21/14-24/8 21/2-24/56