Compare 42/4 and 8/21, Which fraction is greater?

Compare 42/4 and 8/21

1^st number: 10 2/4, 2^nd number: 8/21

42/4 is greater than 8/21

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
42/4 = 42 × 21/4 × 21 = 882/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
8/21 = 8 × 4/21 × 4 = 32/84
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
882/84 > 32/84 or 42/4 > 8/21

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