Subtract 56/18 from 15/9
1st number: 1 6/9, 2nd number: 3 2/18
15/9 - 56/18 is -13/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
15/9 = 15 × 2/9 × 2 = 30/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
56/18 = 56 × 1/18 × 1 = 56/18 - Subtract the two like fractions:
30/18 - 56/18 = 30 - 56/18 = -26/18 - After reducing the fraction, the answer is -13/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/9-56/18 15/18-56/18 15/9-56/36 45/9-56/18 15/27-56/18 15/9-56/54 75/9-56/18 15/45-56/18 15/9-56/90 15/63-56/18