Subtract 6/12 from 3/9
3/9 - 6/12 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
3/9 = 3 × 4/9 × 4 = 12/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
6/12 = 6 × 3/12 × 3 = 18/36 - Subtract the two like fractions:
12/36 - 18/36 = 12 - 18/36 = -6/36 - 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: 6/9-6/12 3/18-6/12 3/9-6/24 3/9-18/12 3/27-6/12 3/9-6/36 15/9-6/12 3/9-30/12 3/45-6/12 3/9-6/60 21/9-6/12 3/9-42/12 3/63-6/12 3/9-6/84