Subtract 9/27 from 4/28
4/28 - 9/27 is -4/21.
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,
4/28 = 4 × 27/28 × 27 = 108/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
9/27 = 9 × 28/27 × 28 = 252/756 - Subtract the two like fractions:
108/756 - 252/756 = 108 - 252/756 = -144/756 - After reducing the fraction, the answer is -4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28-9/27 4/28-18/27 4/56-9/27 4/28-9/54 12/28-9/27 4/84-9/27 4/28-9/81 20/28-9/27 4/28-45/27 4/28-63/27