Compare 20/45 and 90/42
1st number: 20/45, 2nd number: 2 6/42
20/45 is smaller than 90/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
20/45 = 20 × 14/45 × 14 = 280/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
90/42 = 90 × 15/42 × 15 = 1350/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 280/630 < 1350/630 or 20/45 < 90/42
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