Compare 30/12 and 90/15, Which fraction is greater?

Compare 30/12 and 90/15

1^st number: 2 6/12, 2^nd number: 6 0/15

30/12 is smaller than 90/15

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60
Likewise, for the 2nd fraction, since 15 × 4 = 60,
90/15 = 90 × 4/15 × 4 = 360/60
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
150/60 < 360/60 or 30/12 < 90/15

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