Subtract 4/36 from 21/2
1st number: 10 1/2, 2nd number: 4/36
21/2 - 4/36 is 187/18.
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,
4/36 = 4 × 1/36 × 1 = 4/36 - Subtract the two like fractions:
378/36 - 4/36 = 378 - 4/36 = 374/36 - After reducing the fraction, the answer is 187/18
- In mixed form: 107/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-4/36 21/2-8/36 21/4-4/36 21/2-4/72 63/2-4/36 21/2-12/36 21/6-4/36 21/2-20/36 21/10-4/36 21/2-28/36 21/14-4/36