Compare 50/40 and 18/81, Which fraction is greater?

Compare 50/40 and 18/81

1^st number: 1 10/40, 2^nd number: 18/81

50/40 is greater than 18/81

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240

Next, find the equivalent fraction of both fractional numbers with denominator 3240
For the 1st fraction, since 40 × 81 = 3240,
50/40 = 50 × 81/40 × 81 = 4050/3240
Likewise, for the 2nd fraction, since 81 × 40 = 3240,
18/81 = 18 × 40/81 × 40 = 720/3240
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
4050/3240 > 720/3240 or 50/40 > 18/81

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