Compare 18/42 and 56/15, Which fraction is greater?

Compare 18/42 and 56/15

1^st number: 18/42, 2^nd number: 3 11/15

18/42 is smaller than 56/15

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,
18/42 = 18 × 5/42 × 5 = 90/210
Likewise, for the 2nd fraction, since 15 × 14 = 210,
56/15 = 56 × 14/15 × 14 = 784/210
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
90/210 < 784/210 or 18/42 < 56/15

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