Subtract 42/30 from 8/54, Solve 8/54

Subtract 42/30 from 8/54

1^st number: 8/54, 2^nd number: 1 12/30

8/54 - 42/30 is -169/135.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 30 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 54 × 5 = 270,
8/54 = 8 × 5/54 × 5 = 40/270
Likewise, for the 2nd fraction, since 30 × 9 = 270,
42/30 = 42 × 9/30 × 9 = 378/270
Subtract the two like fractions:
40/270 - 378/270 = 40 - 378/270 = -338/270
After reducing the fraction, the answer is -169/135

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