Subtract 7/36 from 81/2
1st number: 40 1/2, 2nd number: 7/36
81/2 - 7/36 is 1451/36.
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,
81/2 = 81 × 18/2 × 18 = 1458/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
7/36 = 7 × 1/36 × 1 = 7/36 - Subtract the two like fractions:
1458/36 - 7/36 = 1458 - 7/36 = 1451/36 - In mixed form: 4011/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/2-14/36 81/4-7/36 81/2-7/72 81/2-21/36 81/6-7/36 81/2-35/36 81/10-7/36 81/2-49/36 81/14-7/36