Compare 30/42 and 90/15, Which fraction is greater?

Compare 30/42 and 90/15

1^st number: 30/42, 2^nd number: 6 0/15

30/42 is smaller than 90/15

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 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 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
150/210 < 1260/210 or 30/42 < 90/15

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