Subtract 28/24 from 12/18
1st number: 12/18, 2nd number: 1 4/24
12/18 - 28/24 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
12/18 = 12 × 4/18 × 4 = 48/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
28/24 = 28 × 3/24 × 3 = 84/72 - Subtract the two like fractions:
48/72 - 84/72 = 48 - 84/72 = -36/72 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-28/24 12/18-56/24 12/36-28/24 12/18-28/48 36/18-28/24 12/18-84/24 12/54-28/24 12/18-28/72 60/18-28/24 12/90-28/24 84/18-28/24