Compare 90/42 and 21/54, Which fraction is greater?

Compare 90/42 and 21/54

1^st number: 2 6/42, 2^nd number: 21/54

90/42 is greater than 21/54

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,
90/42 = 90 × 9/42 × 9 = 810/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
810/378 > 147/378 or 90/42 > 21/54

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