Compare 90/15 and 81/7, Which fraction is greater?

Compare 90/15 and 81/7

1^st number: 6 0/15, 2^nd number: 11 4/7

90/15 is smaller than 81/7

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
90/15 = 90 × 7/15 × 7 = 630/105
Likewise, for the 2nd fraction, since 7 × 15 = 105,
81/7 = 81 × 15/7 × 15 = 1215/105
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
630/105 < 1215/105 or 90/15 < 81/7

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