Compare 20/30 and 70/42, Which fraction is greater?

Compare 20/30 and 70/42

1^st number: 20/30, 2^nd number: 1 28/42

20/30 is smaller than 70/42

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
140/210 < 350/210 or 20/30 < 70/42

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