Subtract 9/27 from 7/28
7/28 - 9/27 is -1/12.
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,
7/28 = 7 × 27/28 × 27 = 189/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
9/27 = 9 × 28/27 × 28 = 252/756 - Subtract the two like fractions:
189/756 - 252/756 = 189 - 252/756 = -63/756 - After reducing the fraction, the answer is -1/12
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