Subtract 81/36 from 7/24
1st number: 7/24, 2nd number: 2 9/36
7/24 - 81/36 is -47/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
7/24 = 7 × 3/24 × 3 = 21/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
81/36 = 81 × 2/36 × 2 = 162/72 - Subtract the two like fractions:
21/72 - 162/72 = 21 - 162/72 = -141/72 - After reducing the fraction, the answer is -47/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/24-81/36 7/48-81/36 7/24-81/72 21/24-81/36 7/72-81/36 35/24-81/36 49/24-81/36