Subtract 6/9 from 3/18
3/18 - 6/9 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
3/18 = 3 × 1/18 × 1 = 3/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
6/9 = 6 × 2/9 × 2 = 12/18 - Subtract the two like fractions:
3/18 - 12/18 = 3 - 12/18 = -9/18 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18-6/9 3/18-12/9 3/36-6/9 3/18-6/18 9/18-6/9 3/18-18/9 3/54-6/9 3/18-6/27 15/18-6/9 3/18-30/9 3/90-6/9 3/18-6/45 21/18-6/9 3/18-42/9 3/18-6/63