Compare 84/18 and 42/15, Which fraction is greater?

Compare 84/18 and 42/15

1^st number: 4 12/18, 2^nd number: 2 12/15

84/18 is greater than 42/15

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90
Likewise, for the 2nd fraction, since 15 × 6 = 90,
42/15 = 42 × 6/15 × 6 = 252/90
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
420/90 > 252/90 or 84/18 > 42/15

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