Compare 90/80 and 8/42, Which fraction is greater?

Compare 90/80 and 8/42

1^st number: 1 10/80, 2^nd number: 8/42

90/80 is greater than 8/42

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
90/80 = 90 × 21/80 × 21 = 1890/1680
Likewise, for the 2nd fraction, since 42 × 40 = 1680,
8/42 = 8 × 40/42 × 40 = 320/1680
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1890/1680 > 320/1680 or 90/80 > 8/42

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