Subtract 24/21 from 8/54, Solve 8/54

Subtract 24/21 from 8/54

1^st number: 8/54, 2^nd number: 1 3/21

8/54 - 24/21 is -188/189.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
8/54 = 8 × 7/54 × 7 = 56/378
Likewise, for the 2nd fraction, since 21 × 18 = 378,
24/21 = 24 × 18/21 × 18 = 432/378
Subtract the two like fractions:
56/378 - 432/378 = 56 - 432/378 = -376/378
After reducing the fraction, the answer is -188/189

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