Subtract 80/54 from 42/12
1st number: 3 6/12, 2nd number: 1 26/54
42/12 - 80/54 is 109/54.
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,
80/54 = 80 × 2/54 × 2 = 160/108 - Subtract the two like fractions:
378/108 - 160/108 = 378 - 160/108 = 218/108 - After reducing the fraction, the answer is 109/54
- In mixed form: 21/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-80/54 42/24-80/54 42/36-80/54 42/60-80/54 42/84-80/54