Subtract 7/54 from 12/18
12/18 - 7/54 is 29/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 54 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
12/18 = 12 × 3/18 × 3 = 36/54 - Likewise, for the 2nd fraction, since 54 × 1 = 54,
7/54 = 7 × 1/54 × 1 = 7/54 - Subtract the two like fractions:
36/54 - 7/54 = 36 - 7/54 = 29/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-7/54 12/18-14/54 12/36-7/54 36/18-7/54 12/18-21/54 12/54-7/54 60/18-7/54 12/18-35/54 12/90-7/54 84/18-7/54 12/18-49/54