Subtract 15/12 from 20/24
1st number: 20/24, 2nd number: 1 3/12
20/24 - 15/12 is -5/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
20/24 = 20 × 1/24 × 1 = 20/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
15/12 = 15 × 2/12 × 2 = 30/24 - Subtract the two like fractions:
20/24 - 30/24 = 20 - 30/24 = -10/24 - After reducing the fraction, the answer is -5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24-15/12 20/24-30/12 20/48-15/12 20/24-15/24 60/24-15/12 20/24-45/12 20/72-15/12 20/24-15/36 20/24-75/12 20/24-15/60 20/24-15/84