Compare 90/21 and 7/84, Which fraction is greater?

Compare 90/21 and 7/84

1^st number: 4 6/21, 2^nd number: 7/84

90/21 is greater than 7/84

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
90/21 = 90 × 4/21 × 4 = 360/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
7/84 = 7 × 1/84 × 1 = 7/84
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
360/84 > 7/84 or 90/21 > 7/84

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