Subtract 12/18 from 20/24
20/24 - 12/18 is 1/6.
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,
20/24 = 20 × 3/24 × 3 = 60/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
12/18 = 12 × 4/18 × 4 = 48/72 - Subtract the two like fractions:
60/72 - 48/72 = 60 - 48/72 = 12/72 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24-12/18 20/24-24/18 20/48-12/18 20/24-12/36 60/24-12/18 20/24-36/18 20/72-12/18 20/24-12/54 20/24-60/18 20/24-12/90 20/24-84/18