Subtract 15/27 from 15/28
15/28 - 15/27 is -5/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
15/28 = 15 × 27/28 × 27 = 405/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
15/27 = 15 × 28/27 × 28 = 420/756 - Subtract the two like fractions:
405/756 - 420/756 = 405 - 420/756 = -15/756 - After reducing the fraction, the answer is -5/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28-15/27 15/28-30/27 15/56-15/27 15/28-15/54 45/28-15/27 15/28-45/27 15/84-15/27 15/28-15/81 75/28-15/27 15/28-75/27