Compare 40/42 and 15/18, Which fraction is greater?

Compare 40/42 and 15/18

40/42 is greater than 15/18

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
40/42 = 40 × 3/42 × 3 = 120/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
120/126 > 105/126 or 40/42 > 15/18

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