Subtract 28/12 from 15/54
1st number: 15/54, 2nd number: 2 4/12
15/54 - 28/12 is -37/18.
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,
15/54 = 15 × 2/54 × 2 = 30/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
28/12 = 28 × 9/12 × 9 = 252/108 - Subtract the two like fractions:
30/108 - 252/108 = 30 - 252/108 = -222/108 - After reducing the fraction, the answer is -37/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/54-28/12 15/54-56/12 15/54-28/24 45/54-28/12 15/54-84/12 15/54-28/36 75/54-28/12 15/54-28/60 15/54-28/84