Compare 15/42 and 12/45
15/42 is greater than 12/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
15/42 = 15 × 15/42 × 15 = 225/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
12/45 = 12 × 14/45 × 14 = 168/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 225/630 > 168/630 or 15/42 > 12/45
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