Compare 80/18 and 18/21, Which fraction is greater?

Compare 80/18 and 18/21

1^st number: 4 8/18, 2^nd number: 18/21

80/18 is greater than 18/21

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
80/18 = 80 × 7/18 × 7 = 560/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
18/21 = 18 × 6/21 × 6 = 108/126
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
560/126 > 108/126 or 80/18 > 18/21

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