Subtract 15/54 from 7/28
7/28 - 15/54 is -1/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 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 54 × 14 = 756,
15/54 = 15 × 14/54 × 14 = 210/756 - Subtract the two like fractions:
189/756 - 210/756 = 189 - 210/756 = -21/756 - After reducing the fraction, the answer is -1/36
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