Subtract 18/54 from 9/12
9/12 - 18/54 is 5/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
9/12 = 9 × 9/12 × 9 = 81/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
18/54 = 18 × 2/54 × 2 = 36/108 - Subtract the two like fractions:
81/108 - 36/108 = 81 - 36/108 = 45/108 - After reducing the fraction, the answer is 5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-18/54 9/12-36/54 9/24-18/54 27/12-18/54 9/36-18/54 45/12-18/54 9/12-90/54 9/60-18/54 63/12-18/54 9/84-18/54