Subtract 30/27 from 28/12
1st number: 2 4/12, 2nd number: 1 3/27
28/12 - 30/27 is 11/9.
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,
28/12 = 28 × 9/12 × 9 = 252/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
30/27 = 30 × 4/27 × 4 = 120/108 - Subtract the two like fractions:
252/108 - 120/108 = 252 - 120/108 = 132/108 - After reducing the fraction, the answer is 11/9
- In mixed form: 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12-30/27 28/12-60/27 28/24-30/27 28/12-30/54 84/12-30/27 28/12-90/27 28/36-30/27 28/12-30/81 28/60-30/27 28/84-30/27