Subtract 21/56 from 7/27, Solve 7/27

Subtract 21/56 from 7/27

7/27 - 21/56 is -25/216.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1512
For the 1st fraction, since 27 × 56 = 1512,
7/27 = 7 × 56/27 × 56 = 392/1512
Likewise, for the 2nd fraction, since 56 × 27 = 1512,
21/56 = 21 × 27/56 × 27 = 567/1512
Subtract the two like fractions:
392/1512 - 567/1512 = 392 - 567/1512 = -175/1512
After reducing the fraction, the answer is -25/216

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