Subtract 18/27 from 28/56, Solve 28/56

Subtract 18/27 from 28/56

28/56 - 18/27 is -1/6.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 27 is 1512

Next, find the equivalent fraction of both fractional numbers with denominator 1512
For the 1st fraction, since 56 × 27 = 1512,
28/56 = 28 × 27/56 × 27 = 756/1512
Likewise, for the 2nd fraction, since 27 × 56 = 1512,
18/27 = 18 × 56/27 × 56 = 1008/1512
Subtract the two like fractions:
756/1512 - 1008/1512 = 756 - 1008/1512 = -252/1512
After reducing the fraction, the answer is -1/6

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