Compare 48/40 and 18/21, Which fraction is greater?

Compare 48/40 and 18/21

1^st number: 1 8/40, 2^nd number: 18/21

48/40 is greater than 18/21

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 40 × 21 = 840,
48/40 = 48 × 21/40 × 21 = 1008/840
Likewise, for the 2nd fraction, since 21 × 40 = 840,
18/21 = 18 × 40/21 × 40 = 720/840
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1008/840 > 720/840 or 48/40 > 18/21

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