Subtract 15/9 from 12/27
1st number: 12/27, 2nd number: 1 6/9
12/27 - 15/9 is -11/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 9 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 27 × 1 = 27,
12/27 = 12 × 1/27 × 1 = 12/27 - Likewise, for the 2nd fraction, since 9 × 3 = 27,
15/9 = 15 × 3/9 × 3 = 45/27 - Subtract the two like fractions:
12/27 - 45/27 = 12 - 45/27 = -33/27 - After reducing the fraction, the answer is -11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/27-15/9 12/27-30/9 12/54-15/9 12/27-15/18 36/27-15/9 12/27-45/9 12/81-15/9 12/27-15/27 60/27-15/9 12/27-75/9 12/27-15/45 84/27-15/9 12/27-15/63