Subtract 20/54 from 4/28
4/28 - 20/54 is -43/189.
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,
4/28 = 4 × 27/28 × 27 = 108/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
20/54 = 20 × 14/54 × 14 = 280/756 - Subtract the two like fractions:
108/756 - 280/756 = 108 - 280/756 = -172/756 - After reducing the fraction, the answer is -43/189
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