Subtract 8/36 from 21/2
1st number: 10 1/2, 2nd number: 8/36
21/2 - 8/36 is 185/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 2 × 18 = 36,
21/2 = 21 × 18/2 × 18 = 378/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
8/36 = 8 × 1/36 × 1 = 8/36 - Subtract the two like fractions:
378/36 - 8/36 = 378 - 8/36 = 370/36 - After reducing the fraction, the answer is 185/18
- In mixed form: 105/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-8/36 21/2-16/36 21/4-8/36 21/2-8/72 63/2-8/36 21/2-24/36 21/6-8/36 21/2-40/36 21/10-8/36 21/2-56/36 21/14-8/36