Subtract 20/24 from 7/12
7/12 - 20/24 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
7/12 = 7 × 2/12 × 2 = 14/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
20/24 = 20 × 1/24 × 1 = 20/24 - Subtract the two like fractions:
14/24 - 20/24 = 14 - 20/24 = -6/24 - After reducing the fraction, the answer is -1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12-20/24 7/12-40/24 7/24-20/24 7/12-20/48 21/12-20/24 7/12-60/24 7/36-20/24 7/12-20/72 35/12-20/24 7/60-20/24 49/12-20/24 7/84-20/24