Compare 21/7 and 28/30, Which fraction is greater?

Compare 21/7 and 28/30

1^st number: 3 0/7, 2^nd number: 28/30

21/7 is greater than 28/30

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
21/7 = 21 × 30/7 × 30 = 630/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
630/210 > 196/210 or 21/7 > 28/30

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