Subtract 6/12 from 9/20
9/20 - 6/12 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
6/12 = 6 × 5/12 × 5 = 30/60 - Subtract the two like fractions:
27/60 - 30/60 = 27 - 30/60 = -3/60 - After reducing the fraction, the answer is -1/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-6/12 9/40-6/12 9/20-6/24 27/20-6/12 9/20-18/12 9/60-6/12 9/20-6/36 45/20-6/12 9/20-30/12 9/20-6/60 63/20-6/12 9/20-42/12 9/20-6/84