Subtract 1/27 from 18/12
1st number: 1 6/12, 2nd number: 1/27
18/12 - 1/27 is 79/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
18/12 = 18 × 9/12 × 9 = 162/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
1/27 = 1 × 4/27 × 4 = 4/108 - Subtract the two like fractions:
162/108 - 4/108 = 162 - 4/108 = 158/108 - After reducing the fraction, the answer is 79/54
- In mixed form: 125/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-1/27 18/12-2/27 18/24-1/27 18/12-1/54 54/12-1/27 18/12-3/27 18/36-1/27 18/12-1/81 90/12-1/27 18/12-5/27 18/60-1/27 18/12-7/27 18/84-1/27