Subtract 20/56 from 3/54
3/54 - 20/56 is -19/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 54 × 28 = 1512,
3/54 = 3 × 28/54 × 28 = 84/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
20/56 = 20 × 27/56 × 27 = 540/1512 - Subtract the two like fractions:
84/1512 - 540/1512 = 84 - 540/1512 = -456/1512 - After reducing the fraction, the answer is -19/63
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