Subtract 56/12 from 28/15
1st number: 1 13/15, 2nd number: 4 8/12
28/15 - 56/12 is -14/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
28/15 = 28 × 4/15 × 4 = 112/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
56/12 = 56 × 5/12 × 5 = 280/60 - Subtract the two like fractions:
112/60 - 280/60 = 112 - 280/60 = -168/60 - After reducing the fraction, the answer is -14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15-56/12 28/30-56/12 28/15-56/24 84/15-56/12 28/45-56/12 28/15-56/36 28/75-56/12 28/15-56/60 28/15-56/84