Subtract 15/12 from 56/18
1st number: 3 2/18, 2nd number: 1 3/12
56/18 - 15/12 is 67/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
56/18 = 56 × 2/18 × 2 = 112/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
15/12 = 15 × 3/12 × 3 = 45/36 - Subtract the two like fractions:
112/36 - 45/36 = 112 - 45/36 = 67/36 - In mixed form: 131/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/18-30/12 56/36-15/12 56/18-15/24 56/18-45/12 56/54-15/12 56/18-15/36 56/18-75/12 56/90-15/12 56/18-15/60 56/18-15/84