Subtract 18/24 from 3/27
3/27 - 18/24 is -23/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 24 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
3/27 = 3 × 8/27 × 8 = 24/216 - Likewise, for the 2nd fraction, since 24 × 9 = 216,
18/24 = 18 × 9/24 × 9 = 162/216 - Subtract the two like fractions:
24/216 - 162/216 = 24 - 162/216 = -138/216 - After reducing the fraction, the answer is -23/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/27-18/24 3/27-36/24 3/54-18/24 3/27-18/48 9/27-18/24 3/27-54/24 3/81-18/24 3/27-18/72 15/27-18/24 3/27-90/24 21/27-18/24