Compare 30/70 and 63/18, Which fraction is greater?

Compare 30/70 and 63/18

1^st number: 30/70, 2^nd number: 3 9/18

30/70 is smaller than 63/18

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630
Likewise, for the 2nd fraction, since 18 × 35 = 630,
63/18 = 63 × 35/18 × 35 = 2205/630
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
270/630 < 2205/630 or 30/70 < 63/18

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