Compare 18/14 and 21/90, Which fraction is greater?

Compare 18/14 and 21/90

1^st number: 1 4/14, 2^nd number: 21/90

18/14 is greater than 21/90

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 14 × 45 = 630,
18/14 = 18 × 45/14 × 45 = 810/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
810/630 > 147/630 or 18/14 > 21/90

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