Subtract 30/4 from 28/12
1st number: 2 4/12, 2nd number: 7 2/4
28/12 - 30/4 is -31/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
28/12 = 28 × 1/12 × 1 = 28/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
30/4 = 30 × 3/4 × 3 = 90/12 - Subtract the two like fractions:
28/12 - 90/12 = 28 - 90/12 = -62/12 - After reducing the fraction, the answer is -31/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12-30/4 28/12-60/4 28/24-30/4 28/12-30/8 84/12-30/4 28/12-90/4 28/36-30/4 28/12-30/12 28/60-30/4 28/12-30/20 28/84-30/4 28/12-30/28