Compare 42/10 and 21/27, Which fraction is greater?

Compare 42/10 and 21/27

1^st number: 4 2/10, 2^nd number: 21/27

42/10 is greater than 21/27

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 27 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 10 × 27 = 270,
42/10 = 42 × 27/10 × 27 = 1134/270
Likewise, for the 2nd fraction, since 27 × 10 = 270,
21/27 = 21 × 10/27 × 10 = 210/270
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1134/270 > 210/270 or 42/10 > 21/27

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