Compare 75/21 and 5/45, Which fraction is greater?

Compare 75/21 and 5/45

1^st number: 3 12/21, 2^nd number: 5/45

75/21 is greater than 5/45

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 21 × 15 = 315,
75/21 = 75 × 15/21 × 15 = 1125/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
5/45 = 5 × 7/45 × 7 = 35/315
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1125/315 > 35/315 or 75/21 > 5/45

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