Subtract 9/18 from 7/12
7/12 - 9/18 is 1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
7/12 = 7 × 3/12 × 3 = 21/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
9/18 = 9 × 2/18 × 2 = 18/36 - Subtract the two like fractions:
21/36 - 18/36 = 21 - 18/36 = 3/36 - After reducing the fraction, the answer is 1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12-9/18 7/24-9/18 7/12-9/36 21/12-9/18 7/12-27/18 7/36-9/18 7/12-9/54 35/12-9/18 7/12-45/18 7/60-9/18 7/12-9/90 49/12-9/18 7/12-63/18 7/84-9/18