Subtract 30/27 from 28/56, Solve 28/56

Subtract 30/27 from 28/56

1^st number: 28/56, 2^nd number: 1 3/27

28/56 - 30/27 is -11/18.

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,
30/27 = 30 × 56/27 × 56 = 1680/1512
Subtract the two like fractions:
756/1512 - 1680/1512 = 756 - 1680/1512 = -924/1512
After reducing the fraction, the answer is -11/18

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