Subtract 3/15 from 28/12
1st number: 2 4/12, 2nd number: 3/15
28/12 - 3/15 is 32/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
28/12 = 28 × 5/12 × 5 = 140/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
3/15 = 3 × 4/15 × 4 = 12/60 - Subtract the two like fractions:
140/60 - 12/60 = 140 - 12/60 = 128/60 - After reducing the fraction, the answer is 32/15
- In mixed form: 22/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12-3/15 28/12-6/15 28/24-3/15 28/12-3/30 84/12-3/15 28/12-9/15 28/36-3/15 28/12-3/45 28/60-3/15 28/12-3/75 28/12-21/15 28/84-3/15