Subtract 9/18 from 81/24
1st number: 3 9/24, 2nd number: 9/18
81/24 - 9/18 is 23/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
81/24 = 81 × 3/24 × 3 = 243/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
9/18 = 9 × 4/18 × 4 = 36/72 - Subtract the two like fractions:
243/72 - 36/72 = 243 - 36/72 = 207/72 - After reducing the fraction, the answer is 23/8
- In mixed form: 27/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/48-9/18 81/24-9/36 81/24-27/18 81/72-9/18 81/24-9/54 81/24-45/18 81/24-9/90 81/24-63/18