Subtract 42/12 from 3/54, Solve 3/54

Subtract 42/12 from 3/54

1^st number: 3/54, 2^nd number: 3 6/12

3/54 - 42/12 is -31/9.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108

Next, find the equivalent fraction of both fractional numbers with denominator 108
For the 1st fraction, since 54 × 2 = 108,
3/54 = 3 × 2/54 × 2 = 6/108
Likewise, for the 2nd fraction, since 12 × 9 = 108,
42/12 = 42 × 9/12 × 9 = 378/108
Subtract the two like fractions:
6/108 - 378/108 = 6 - 378/108 = -372/108
After reducing the fraction, the answer is -31/9

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