Compare 42/54 and 15/20
42/54 is greater than 15/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
42/54 = 42 × 10/54 × 10 = 420/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
15/20 = 15 × 27/20 × 27 = 405/540 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 420/540 > 405/540 or 42/54 > 15/20
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