Compare 15/2 and 42/80, Which fraction is greater?

Compare 15/2 and 42/80

1^st number: 7 1/2, 2^nd number: 42/80

15/2 is greater than 42/80

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 2 × 40 = 80,
15/2 = 15 × 40/2 × 40 = 600/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
600/80 > 42/80 or 15/2 > 42/80

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