Compare 18/7 and 21/27, Which fraction is greater?

Compare 18/7 and 21/27

1^st number: 2 4/7, 2^nd number: 21/27

18/7 is greater than 21/27

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 7 × 27 = 189,
18/7 = 18 × 27/7 × 27 = 486/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
21/27 = 21 × 7/27 × 7 = 147/189
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
486/189 > 147/189 or 18/7 > 21/27

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