Compare 12/42 and 42/54, Which fraction is greater?

Compare 12/42 and 42/54

12/42 is smaller than 42/54

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 42 × 9 = 378,
12/42 = 12 × 9/42 × 9 = 108/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
108/378 < 294/378 or 12/42 < 42/54

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