Compare 45/81 and 81/70, Which fraction is greater?

Compare 45/81 and 81/70

1^st number: 45/81, 2^nd number: 1 11/70

45/81 is smaller than 81/70

Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670

Next, find the equivalent fraction of both fractional numbers with denominator 5670
For the 1st fraction, since 81 × 70 = 5670,
45/81 = 45 × 70/81 × 70 = 3150/5670
Likewise, for the 2nd fraction, since 70 × 81 = 5670,
81/70 = 81 × 81/70 × 81 = 6561/5670
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
3150/5670 < 6561/5670 or 45/81 < 81/70

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