Compare 21/6 and 70/40, Which fraction is greater?

Compare 21/6 and 70/40

1^st number: 3 3/6, 2^nd number: 1 30/40

21/6 is greater than 70/40

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 6 × 20 = 120,
21/6 = 21 × 20/6 × 20 = 420/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
70/40 = 70 × 3/40 × 3 = 210/120
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
420/120 > 210/120 or 21/6 > 70/40

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