Compare 30/42 and 45/30, Which fraction is greater?

Compare 30/42 and 45/30

1^st number: 30/42, 2^nd number: 1 15/30

30/42 is smaller than 45/30

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
45/30 = 45 × 7/30 × 7 = 315/210
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
150/210 < 315/210 or 30/42 < 45/30

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