Subtract 27/54 from 42/12
1st number: 3 6/12, 2nd number: 27/54
42/12 - 27/54 is 3/1.
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,
42/12 = 42 × 9/12 × 9 = 378/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
27/54 = 27 × 2/54 × 2 = 54/108 - Subtract the two like fractions:
378/108 - 54/108 = 378 - 54/108 = 324/108 - After reducing the fraction, the answer is 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-27/54 42/24-27/54 42/12-81/54 42/36-27/54 42/60-27/54 42/84-27/54