Compare 3/7 and 18/90
3/7 is greater than 18/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
3/7 = 3 × 90/7 × 90 = 270/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
18/90 = 18 × 7/90 × 7 = 126/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 270/630 > 126/630 or 3/7 > 18/90
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