Compare 30/15 and 42/81
1st number: 2 0/15, 2nd number: 42/81
30/15 is greater than 42/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
30/15 = 30 × 27/15 × 27 = 810/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
42/81 = 42 × 5/81 × 5 = 210/405 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 810/405 > 210/405 or 30/15 > 42/81
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