Subtract 42/12 from 5/54
1st number: 5/54, 2nd number: 3 6/12
5/54 - 42/12 is -92/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
5/54 = 5 × 2/54 × 2 = 10/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
42/12 = 42 × 9/12 × 9 = 378/108 - Subtract the two like fractions:
10/108 - 378/108 = 10 - 378/108 = -368/108 - After reducing the fraction, the answer is -92/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/54-42/12 5/54-84/12 5/54-42/24 15/54-42/12 5/54-42/36 25/54-42/12 5/54-42/60 35/54-42/12 5/54-42/84