Compare 18/56 and 90/72, Which fraction is greater?

Compare 18/56 and 90/72

1^st number: 18/56, 2^nd number: 1 18/72

18/56 is smaller than 90/72

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 56 × 9 = 504,
18/56 = 18 × 9/56 × 9 = 162/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
162/504 < 630/504 or 18/56 < 90/72

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